How can i use a second leveu group on a Dimension

Hello everyone.
I would like to know how to create a new dimension just by taking the next level of the Tribe-Squad. Example:

So is the value of my variable:
PO - BI
Dev - BI

Resume: The a new dimension will have the values: Business intelligence, finance, etc.

Hi @puka,
I see that you have also posted your question here, where my colleague has given you the answer -

best,
Gerda