How to: Frame a 79"x22 1/2" partition wall for the Shower Door

[bbader123]

Hello - looking for help to frame a 79"x22 1/2" partition wall for the Shower Door using 2x4s on concrete. The wall, as pictured in my plan, will hold a 79"x34" (3/8" thick) frameless shower door. I found a lot of knee wall/pony wall videos but none that address this challenge. Found Simpson Hangers, put a hole in 2x4, attach far end hanger to concrete and 2x4, but that was for a knee wall.