You can achieve what you need in 2 ways: Hierarchy or through Filter Actions on Worksheets.
I will show how you can create a hierarchy and use since it will be easy for you to do it.
1. Create Hierarchy by selecting the dimensions and right clicking on them. You can give an appropriate name for it.
2. The created hierarchy can seen below:
3. You can now use it as a normal dimension and place in your chart or table.
Hope this helps.
Hierarchy.twbx 1.2 MB