how to restrict project role List of values in resource assignment

Summary:

we wanted to restrict the project roles based on the project and SOW(contract) signed and agreed with the client while assigning the resources.

Content (please ensure you mask any confidential information):

we do not have any seeded value set to restrict the role, is there any custom way to put the logic or condition.

Version (include the version you are using, if applicable):

Code Snippet (add any code snippets that support your topic, if applicable):