[PyMOL] moving one segment relative to the rest

[Shohei Koide]

Hello,

I am wondering if one can move one segment (in my case, an antigen 
protein) relative to the rest of the complex (antibody) using PyMOL. 
So far I have only been able to translate/rotate the entire complex. 
I would like to manually "undock" the complex for an illustration 
purpose.

Thanks.

Shohei Koide