Allow service osms to read instances in tenancy
Allow group osms-group to manage osms-family in tenancy
Allow dynamic-group osms-dynamic-group to read instance-family in tenancy
Allow dynamic-group osms-dynamic-group to use osms-managed-instances in tenancy

Reference Link

https://docs.oracle.com/en-us/iaas/os-management/osms/osms-getstarted.htm