Create a backup on-call schedule
To set up a secondary calendar, head over to the Who’s on-call tab and click on Add on-call calendar
Adding additional (secondary) calendar can be useful if you’d like to have various people on-call at the same time and do not wish to include them all in one single calendar.
This would also prove super useful when setting up advanced escalation policies on the Business plan as you can choose to contact the on-call person from each calendar you have set up.
step 1 - alert person from primary on-call calendar
step 2 - alert person from secondary on-call calendar