To group data by more than 2 attributes, you can use custom attributes. Here's how you can do it.
Let's say you want to create a report that groups tickets by month, urgency, and priority. You start by grouping the tickets by 'Month of the Year'. Now, you need to group by 2 more fields: 'Urgency' and 'Priority'.
To do this, create a custom attribute by combining the values of urgency and priority. Use this new attribute for the additional grouping.
You group-by setup will look like this:
Your widget will appear like this:
