Hi Eric, If I understand your ask correctly, the solution you're looking for will be as follows...
1) Select the "Planned End Date" within the slicer visible in your screen shot
2) Check the "Planned End Date" tick box that will appear
3) Select the date range, From and To
Hope this helps. If not, please reach back out and I'll see about arranging a call with one of our SME's.
Thanks Eric.
Alex.