| Actor level
| Specifies which level or levels to consider. The levels available in the list depend on the selected actor in the assembly tree. |
| Select actors from the current levels to the selected level | Selects all the groups/parts from the selected level up to the targeted one. If this option is cleared, only the targeted levels are selected. |
| Select matching actors | Selects matching actors in the assembly tree and the viewport. |
| Add to the selection | Adds matching actors to the selection (similar to pressing
Ctrl). |
| Remove from the selection | Removes matching actors from the selection (similar to pressing
Shift). |