This command sets a group, level-of-detail, or mesh node as the active parent. Typically the active parent is only used with group and level-of-detail nodes.
Select a group or level-of-detail node and apply the command. Or you can hold down ALT and right click to set a node as active.
Figures are as follows:
Figure 1.1.
The first group is active:
Figure 1.2.
The last group is active:

Command registration information is as follows:
| Category Type | Information |
| Implementation | SCRIPT |
| Module | HIERARCHY_SCRIPTS.SSL |
| Category | Hierarchy Commands |
| GUID | {1F91F9DB-F612-46d4-A453-4B81096121A9} |
| Source Name | HierarchySetActiveParent |
| Interface Name | Set Active Parent |
| Core | Yes |
| Sample | No |
| Access | Select from Hierarchy option on the main menu. |