From the customer view in https://admin.webex.com, go to , scroll to Calling and then choose Client Settings.
Drag and drop calling options that you want users to see to the Available Call Options field, and then rearrange them in the priority order that you want for your users.
Other options that are hidden for users appear in the Hidden Call Options field, as shown in this example screenshot:
Toggle on Enable Single Click-to-Call if you want users to be able to make a call with the first call option that you configured in the previous step.
Set Calling Options for Webex Users
You can use Webex Control Hub to set the priority of available calling options that users see in Webex. You can also enable them for single click-to-call.