I'm sorry for delay (holiday) but I tested entire process yesterday and I still have one problem:
I'm not able to set up VM backup as tenant admin user in admin console. I can install agent, create storage pool, configure hypervisor, but i'm not able to create plan and due to this i'm not able to create VM group. I cannot derive VSA plan and i don't see a create plan shortcut as tenant admin. I only can create plan as comcell admin, give rights to tenant admin, but without ability to change retention.
Other plans are derived without problems.
Thank you for your support.