To get started, sign up for an anonymous Callable account and connect it to your Slack account using an individual sign up code (generated by the Callable Slack app installed into your workspace).
After connecting accounts, create a call invite with your status message and an optional meeting URL. To use Zoom or Google Meet for your incoming calls a custom meeting URL is required. Otherwise, Jitsi Meet is used instead with a unique meeting ID generated automatically for each incoming call.
Finally, to start taking calls either on desktop in Slack or on your phone when away from computer, post the invite link in channels or direct messages. Once the call is accepted, join the call in the your chosen instant meeting app by tapping “Join” button.
Invite details, such as the status message, meeting URL and availability for calls, can be managed both in the app by tapping the pencil button in the bottom right corner or swiping left on the invite as well as in Slack using slash commands (type /callable for help).