To select multiple objects, you use the "Ctrl" key on Windows/Linux or the "Command" key on macOS.
The key you use to select multiple objects depends on the specific software or application you're using. However, the most common keys used for multiple object selection are: Shift: This key allows you to select a group of objects that are contiguous (touching or near each other). To do this, hold down the Shift key and click on the first object you want to select, then click on the last object you want to select.
So, Ctrl (Command): This key allows you to select multiple objects that are not contiguous. To do this, hold down the Ctrl (Command) key and click on each object you want to select.