Need to provide "Join by SIP" to user

We are hosting a Zoom meeting and sent the link. We were then informed that one of the parties cannot connect via a link, but must be provided with "Join by SIP..." information. I found the right place on Zoom and it says you have to have a paid plan, which we do. We have Zoom Pro, but I cannot figure out how to access the H.323/SIP Room Connector.  Any help is much appreciated