How to create a group as filter

[Jtischler]

I have two tables on has top performers one has bottom.  Each has unique value for User ID.  How can I group each table so that I can put both in a slicer that will display a top and a bottom tile to filter performance data visuals using table 3 based on the selection of top or bottom performers?  I am new to PowerBI and wanting to learn so detailed explanations woule be very helpful.  Thanks!

[vicky_]

This guide should help you get started - https://www.sqlbi.com/articles/use-of-rankx-in-power-bi-measures/
I think you can modify to show your original measure only if it's in the top 3 or bottom 3.

[Jtischler]

@vicky_  I don't think that will give me what I am after.  I don't want to rank the users in the top and bottom tables.  Those users have already been identified by being placed in separate tables.  What I want to do is create two columns/measures in main table 3,  labeled top and bottom  that I can put in a slicer to filter all data respectively.