diff --git a/demo-app/src/stories/table/TreeFixedDataTableGantt.stories.tsx b/demo-app/src/stories/table/TreeFixedDataTableGantt.stories.tsx
index 940d844a..d57242ab 100644
--- a/demo-app/src/stories/table/TreeFixedDataTableGantt.stories.tsx
+++ b/demo-app/src/stories/table/TreeFixedDataTableGantt.stories.tsx
@@ -1,17 +1,57 @@
 
 import { TreeFixedDataTableRRC } from "@crispico/foundation-react/components/treeFixedDataTable/TreeFixedDataTable";
-import { Main, Task, root } from "@crispico/foundation-react/components/treeFixedDataTable/TreeFixedDataTable.stories";
+import { Main, Task, root, Segment } from "@crispico/foundation-react/components/treeFixedDataTable/TreeFixedDataTable.stories";
 import { ReduxReusableComponents } from "@crispico/foundation-react/reduxReusableComponents/ReduxReusableComponents";
 import { Utils } from "@crispico/foundation-react/utils/Utils";
-import { Group, Item, Timeline } from "@famiprog-foundation/react-gantt";
+import { Group, Item, ItemRenderer, Timeline } from "@famiprog-foundation/react-gantt";
 import { Cell, Column, Table } from 'fixed-data-table-2';
 import { d } from "../sampleData";
 import { Message } from "semantic-ui-react";
+import { getKeyThenIncreaseKey } from "antd/lib/message";
 
 export default {
     title: 'Features/Table',
 };
 
+class CustomItemRenderer extends ItemRenderer {
+    render() {
+        if (this.props.item.isParentSegment) {
+            return <ParentItemRenderer {...this.props}/>
+        } else {
+            return super.render();
+        }
+    }
+}
+
+class ParentItemRenderer extends ItemRenderer {
+    hasCustomShape() {
+        return true;
+    }
+
+    drawCustomShapeRenderer() {
+        const ARROW_WIDTH = 20;
+        const height = this.getHeight() as number;
+        // We need to make the rectangle a little bit bigger because the row height is 40 px and the actual segment height is 30.
+        // So if we draw the rectangle only till the middle of the segment 
+        // the text (that has 18px height) will overflow the rectangle with 3 px
+        const rectangleHeight = (this.getHeight() as number) / 2 + 4;
+        const rightArrowStartX = this.props.width - ARROW_WIDTH;
+        const leftArrowPoints = "0," + rectangleHeight + " " + ARROW_WIDTH + "," + rectangleHeight + " " + ARROW_WIDTH / 2 + "," + height + " 0," + rectangleHeight;
+        const rightArrowPoints = rightArrowStartX + "," + rectangleHeight + " " + (rightArrowStartX + ARROW_WIDTH) + "," + rectangleHeight + " " 
+                                + (rightArrowStartX + ARROW_WIDTH / 2) + "," + height + " " +  rightArrowStartX + "," + rectangleHeight;
+
+        return <>
+                    <rect width={this.props.width} height={rectangleHeight} fill={this.getColor()}  fillRule="evenodd"/>
+                    <polygon points={leftArrowPoints} fill={this.getColor()} fillRule="evenodd"/>
+                    <polygon points={rightArrowPoints} fill={this.getColor()} fillRule="evenodd"/>
+                </>
+    }
+
+    getTitleStyle() {
+        return {alignSelf: "start"};
+    }
+}
+
 export const TreeTable = () => {
     // adding an additional task here, so that the shape of the data appears in the Storybook code snippet
     // however, subtle detail: don't do this in prod; I mean, don't give a new "root" to the component on each render (which happens here)
@@ -55,7 +95,7 @@ export const TreeTable = () => {
             getChildrenFunction={task => Object.keys(task.subtasks).map(key => { return { localId: key, item: task.subtasks[key] } })}
             initialExpandedIds={{ 1: true, 2: true, [`2${Utils.defaultIdSeparator}0`]: true }}
             renderMainElementFunction={({ mainChildren, linearizedItems }) => {
-                const items: Item[] = [];
+                const items: (Item & {isParentSegment: boolean}) [] = [];
                 const groups: Group[] = [];
                 // using a for (instead of 2 x map()) in order to avoid 2 iterations
                 linearizedItems.forEach((li, i) => {
@@ -64,7 +104,8 @@ export const TreeTable = () => {
                     const task = navigateToTask(li.itemId);
                     task.segments.forEach((segment, j) => items.push({
                         key: "" + i + "." + j, row: i, start: segment.start, end: segment.end, title: segment.percentComplete + "%",
-                        color: segment.percentComplete == 0 ? "#FA0000" : (segment.percentComplete === 100 ? "#9ACD32" : "#FFA500")
+                        color: segment.percentComplete == 0 ? "#FA0000" : (segment.percentComplete === 100 ? "#9ACD32" : "#FFA500"),
+                        isParentSegment: task.subtasks != undefined && task.subtasks.length > 0
                     }))
                 });
 
@@ -74,7 +115,8 @@ export const TreeTable = () => {
                         width={420} height={300}>
                         <Column header={<Cell>Name</Cell>} width={400} cell={props => mainChildren[props.rowIndex]} />
                     </Table>
-                    } />
+                    } 
+                    itemRenderer={CustomItemRenderer}/>
             }}
             renderItemFunction={({ linearizedItem }) => navigateToTask(linearizedItem.itemId).name}
         />
diff --git a/src/components/ItemRenderer.js b/src/components/ItemRenderer.js
index 46462a53..1df5c6b9 100644
--- a/src/components/ItemRenderer.js
+++ b/src/components/ItemRenderer.js
@@ -4,6 +4,12 @@ import React from 'react';
 import {Item} from '../utils/itemUtils';
 
 const ITEM_RENDERER_CLS = 'rct9k-item-renderer';
+
+// This class is used in case of a custom shape renderer drawn via `drawCustomShapeRenderer()`.
+// It disables the visual styles related to the default rectangle shape of the renderer:
+// 1. The background color and the borders
+// 2. The box shadow effect
+const CUSTOM_FIGURE_ITEM_RENDERER_CLS = 'rct9k-custom-shape-item-renderer';
 const ITEM_RENDERER_GLOW_CLS = 'rct9k-item-glow';
 
 /**
@@ -34,6 +40,12 @@ export default class ItemRenderer extends React.Component {
      */
     tooltip: PropTypes.string,
 
+    /**
+     * It's passed by the parent. Though not used by this component. It exists because maybe subclasses want to use it.
+     * @type { number }
+     */
+    width: PropTypes.number,
+
     /**
      * The height of the segment (item).
      *
@@ -83,6 +95,11 @@ export default class ItemRenderer extends React.Component {
      */
     style: PropTypes.object,
 
+    /**
+     * @type { object }
+     */
+    titleStyle: PropTypes.object,
+
     /**
      * Class name used to render the segment (item).
      * @type { string }
@@ -100,6 +117,7 @@ export default class ItemRenderer extends React.Component {
     tooltip: undefined,
     className: undefined,
     style: {},
+    titleStyle: {},
     item: {}
   };
 
@@ -209,6 +227,10 @@ export default class ItemRenderer extends React.Component {
     return style;
   }
 
+  getTitleStyle() {
+    return this.props.titleStyle;
+  }
+
   /**
    * Returns a css class used to apply glow on item hover.
    * @returns { string }
@@ -222,13 +244,48 @@ export default class ItemRenderer extends React.Component {
    * @returns { string }
    */
   getClassName() {
-    return ITEM_RENDERER_CLS + ' ' + this.props.className + ' ' + this.getGlowOnHoverClassName();
+    return (
+      ITEM_RENDERER_CLS +
+      ' ' +
+      this.props.className +
+      ' ' +
+      this.getGlowOnHoverClassName() +
+      (this.hasCustomShape() ? ' ' + CUSTOM_FIGURE_ITEM_RENDERER_CLS : '')
+    );
+  }
+
+  hasCustomShape() {
+    return false;
+  }
+
+  /**
+   * If the user wants an item renderer with a special shape:
+   * 1. It needs to override `hasCustomShape()` to return true
+   * 1. And implement the drawCustomShapeRenderer(). This needs to return the content of a svg
+   *
+   * @type { JSX.element | undefined}
+   */
+  drawCustomShapeRenderer() {
+    throw new Error('In case of a custom shape renderer the `drawCustomShapeRenderer()` should be implemented');
   }
 
   render() {
     return (
-      <span className={this.getClassName()} style={this.getStyle()} title={this.getTooltip()}>
-        <span className="rct9k-item-renderer-inner">{this.getTitle()}</span>
+      <span
+        className={this.getClassName()}
+        style={{...this.getStyle(), position: 'relative'}}
+        title={this.getTooltip()}>
+        <span className="rct9k-item-renderer-inner" style={this.getTitleStyle()}>
+          {this.getTitle()}
+        </span>
+        {this.hasCustomShape() && (
+          <svg
+            style={{position: 'absolute', zIndex: '-10', left: '0', top: '0'}}
+            width={this.props.width}
+            height={this.getHeight()}>
+            {this.drawCustomShapeRenderer()}
+          </svg>
+        )}
       </span>
     );
   }
diff --git a/src/style.css b/src/style.css
index 81be6b45..2a532692 100644
--- a/src/style.css
+++ b/src/style.css
@@ -221,10 +221,10 @@
   width: 2px;
 }
 
-.rct9k-item-renderer {
-  opacity: 0.8;
-  border: darkgrey solid 1px;
-  border-radius: 3px;
+.rct9k-custom-shape-item-renderer {
+  box-shadow: none !important;
+  border: none !important;
+  background: none !important;
 }
 
 .rct9k-item-renderer-inner {
diff --git a/src/utils/itemUtils.js b/src/utils/itemUtils.js
index 88a4fb47..2f3229af 100644
--- a/src/utils/itemUtils.js
+++ b/src/utils/itemUtils.js
@@ -83,7 +83,14 @@ export function rowItemsRenderer(
         data-item-index={i.key}
         className={outerClassnames}
         style={{left, width, top, backgroundColor: 'transparent'}}>
-        <Comp {...itemRendererDefaultProps} {...i} item={i} className={compClassnames} height={adjustedItemHeight} />
+        <Comp
+          width={width}
+          {...itemRendererDefaultProps}
+          {...i}
+          item={i}
+          className={compClassnames}
+          height={adjustedItemHeight}
+        />
       </span>
     );
   });