Rotageek allows you to automatically sync your work shifts with your calendar.
From your mobile:
Start by going onto your settings:
Then scroll down and select Rotageek. Then 'Allow Rotageek to Access' your Calendars.
After this log into your Rotageek app. Go onto 'Sync' and select 'On'.
You can then select the Calendar you want to sync it to.
From your desktop:
You can also export a calendar from your desktop.
Log in and click on your name in the bottom right. Select calendar.
When on the calendar, select the relevant week and press 'Export to .ics'
Choose what calendar you want to add your events to and voila!