Specifies which part is to be positioned in the assembly. This button is active when adding a relationship to a part that already exists in the assembly, or when placing a subassembly. This button is inactive when placing a new part in an assembly.

Specifies which element is to be used on the part being positioned in the assembly.

Specifies which part in the assembly the placement part is to be positioned with. You can select any part in the assembly.

Specifies which part element in the assembly the placement part element is to be positioned with.

Orients the part in the assembly using the position you defined.

Unlocks the rotational orientation of the part. When you set this option, you can use another assembly relationship to define the rotational orientation of the part. For example, you can apply an angle relationship.

Fixes the rotational orientation of the part at a random location. This option is useful when the rotational orientation of the part is not important, such as for a bolt being positioned in a hole.