To use vCenter Server with VMware Horizon, you must also configure a user account with appropriate vCenter Server privileges. You can create a vCenter Server role with the appropriate privileges and assign that role to the vCenter Server user account.
The list of privileges that you must add to the vCenter Server role varies, depending on whether you use VMware Horizon with or without instant clones. You specify a vCenter Server user when you add vCenter Server to VMware Horizon.