mphalak,
You can give them admin access, however once you have, they can give themselves what ever rights they want including node management. The admin role gives them access to all the settings for the main orion page as well as any subsequent products you own. Be very carful who you give Admin to. So the person with this role should be a lead or trusted individual. Keep in mind any actions they make are recorded as a audit events. This means you can track what changes they make such as un-managing a node, deleting an interface , etc.
Regards,
Adam Stephen
Loop 1 Systems
Remote Engineer Level 2
www.loop1systems.com