Steps to Set Impersonation rights for 2010, 2013, 2016 and 2019 Live Exchange Server user:

  1. Make sure the admin account is a global admin.

  2. Start Exchange Management Shell under an administrator context (right-click -> run as administrator)

Step 1:

Command:

Set-ExecutionPolicy Unrestricted

Result:
live-admin-account

Step 2:

Command:

Enable-OrganizationCustomization

Result:
live-enable-organization

Ingore this results, if the error is "This operation is not required. Organization is already enabled for customization."

Step 3:

Command:

New-ManagementRoleAssignment -Role "ApplicationImpersonation" -User administrator

Result:
live-management-roles