You should submit a TAC ticket to get your issue resolved

The receptionist client is being retired. The announcement was made in December 2023. It has been replaced by a new modern experience, The attendant console https://help.webex.com/en-us/article/4xgekbb/Get-started-with-the-Attendant-Console

James, this is not normal as you should be able to see those settings. Please contact TAC so they can resolve your issue. 

I am unable to recreate your issue on both my android and apple phones. Can you try and see if you see these options.In the webex app, go to settings > calling > advanced settings > incoming calls > call forwarding.Do you have call forwarding options...