From FreeCAD Documentation
- Optionally specify the cascade spacing with the TechDraw ExtensionSelectLineAttributes tool.
- Select two or more horizontal dimensions.
- The first dimension defines the position. This dimension will not be moved, the other dimensions will be positioned relative to this dimension.
- There are several ways to invoke the tool:
- Press the Cascade Horizontal Dimensions button.
- Select the TechDraw → Extensions: Attributes/Modifications → Cascade Horizontal Dimensions option from the menu.
- The dimensions are evenly spaced and their dimension texts are centered.