When you create VDI host pools, you can assign a template to a pool. This can be done when you create or modify a pool, or it can be done from the Templates tab.
To assign a template to a host pool:
On the Templates tab, select a template.
Click Tasks > Assign to pool. A wizard opens.
On the Versions page, select the template version that will be assigned to the host pool.
(Optional) On the Host pool page, select the host pools that you want to recreate on schedule and click the Next button. You will see a dialog that allows you to schedule recreation. Configure the schedule according to your needs and click Next.
Click Finish.
To remove a template from a host pool:
Select a template and click Tasks > Remove from pool.
A dialog opens listing all host pools to which this template is assigned.
Select the host pools to remove the template from and click OK.
Note that if a host pool has hosts created from the template that you are removing, they will be removed as well. A message is displayed where you need to confirm the removal.