You can only select one sheet at a time. This is referred to as the active sheet. The active sheet is shown in the 2D view and you can create vector artwork on it.
To select the active sheet:
- In the Project panel, click
beside the
Sheets item in the Project Tree to display the sheet stack.
- In the Project Tree, click the name of the sheet you want to use. Its panel is displayed below the splitter bar.