VDI Pool Reboots

I want to be able to give a group of Users the ability to remote restart a VDI pool based on Name the of the VDI Pool.

Or

I would like users of a VDI pool have the abilty to retain the machine they just used.

We use our VDI pools as standard test machines and testers need to restart there machines and log back in. I know pernsal Desktops would do this, but I was wondering if anyone had any great ideas?

Thanks