No Paging or Paging Multicast Option in Version 20.0 Update 3 (Build 806 Release)?

[TMCentral Tech]

In one of our 3CX instances, there is no option to change Ring Strategy to Multicast - while another does instance does have the option. We verified the Call Code is set (*8) for Paging. Both are Licensed for Professional. Where else to look for what could be causing this?