Can We assign Multiple Roles to Single User in FFS ?

Summary:

We have a requirement where one user handles both the roles of Manager and Technician.

How can we achieve this in FFS to assign the Manager+Technician Role to a Single person and showcase him on the Resource Tree?

Content (please ensure you mask any confidential information):

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

FFS 25C

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