Why after create new UDO automatically assigned rol?

Hi, When we create Orchestrator components, roles/users are automatically assigned for security purposes. We should prevent this automatic assignment. How can I choose which roles to automatically assign?..I mean an ORCH object is created and several roles are automatically assigned to it; a RULE object is created and other roles are automatically assigned to it; a SERVICE REQUEST object is created and it also has other roles. Why does this happen? Where is this configuration done?

thanks in advance