My new tool – Opsgenie schedule generator. It is a tool that can create Excel spreadsheet based on the Opsgenie schedule. And it also has a Lambda version, which allows you to deploy it with AWS API gateway, so you can have your RESTful API for your roster schedule.
Note: In my practise, there are two support staffs for each week – Primary and Secondary. Secondary is the primary of the previous week.
This is how my API response looks like: