If you've already created a workspace, such as a lobby or lunch room, you can still add services, such as PSTN, to the Cisco Webex Room, Desk, or Board devices in that workspace.
From the customer view in https://admin.webex.com, go to , and then select the workspace that you want to update.
Go to Calling and click the cogwheel . Then choose a call service for the workspace and click Save.
Go to Workspace Scheduling and click the cogwheel . Choose a scheduling option for the workspace and click Save.