Using MAXX in a hierarchy

Yes, I'll try to formulate it better!

I want to find the max values for each unit for each week. 

In group 1 for units
Unit A Week 34: num=1, denom=10 (17.08)
Unit A Week 35: num=3, denom=20 (24.08)
   -(because this gives a higher value than 23.08.2022 which is num=2, denom=20)

Unit B Week 34: num=0, denom=10 (17.08)
Unit B Week 35: num=3, denom=20 (24.08)

In group 1 for the group:
Values here are from the step above
Week 34: num=1+0, denom=10+10 --> value = 1/20
Week 35: num=3+3, denom=20+20 --> value = 3/20

This means week 35 is the largest, and the displayed value should be 0.15 for group 1.
I see that your caluclation gives the same, but that's just because of my unfortunate choice of values

Did it make any sense?
Thank you so much for taking the time to look at this!