Condensation using CMS method(CMSMETH)

Hello,

I want to create an EXB file that is condensed in Optistruct using CMSMETH which is later used in AVL excite MBS software. I have one example file but I don´t know how it was created and where (simlab or Hypermesh).

Can anyone help me with how to do it? For example I have an gear model as you can see in tha below image in which the center nodes are attached to the structure using RBE3 elements and I want condense entire model to that two nodes.

Thank you and best regards