Makes a subassembly adjustable. When you specify that a subassembly is adjustable, you can apply positioning relationships between the parts in the subassembly while in a higher-level assembly. This makes it possible to edit the relationship from the higher level assembly.
When you specify that a subassembly is adjustable, you cannot in-place activate the subassembly using the Edit command.
For more information, see the Adjustable assemblies Help topic.