Manageengine AD Manager - Remote Powershell (Domain) Setup

Manageengine AD Manager - Remote Powershell (Domain) Setup

Hi there, I am trying to setup AD Manager on my Domain for the first time and Its creating Legacy Mailboxes.

I read you need to enable the Remote PS in Domain settings, 

Can some one please help me and give me some clear instructions on how to do this

      New to ADSelfService Plus?