Hi @pantelis,
You won’t be able to include them in the same column, the system would have no way of knowing to display Max and Min alternating every other line, the tables in QS don’t work that way unfortunately.
In regards to your second question about adding filters, why don’t you try using ‘POST_AGG_FILTER’ instead of ‘PRE_AGG’.
Please review the following articles that further explore Level-Aware Calculations as I feel like these would be very helpful towards a couple of your recent community posts: