Solman ITSM - how to restrict the assignment of support team in the crm_ui

Hi Experts,

We are doing a fresh implementation of the ITSM with Solman 7.2 SP07
We created a Organization Model to do the support of the documents, but we have others Organization Models.
My question is how to restrict the assignment of support team in the crm_ui to only one organization model or to a restrict list of Organization Units?

Thank you