Select 2 or more sketches (Ctrl or Shift key) that you want to combine into a sweep and click on the context menu command Create basic swe [Create sweep base] ep.
-> The Basic History [Sweep base] docking window opens.
Optionally, you have the possibility in the dialog area Feature attributes. [Feature attributes...].. dialog area using the
Button to add colors or material.
Enter the desired name and confirm with .