These were used in my school district for management and accounting, until they moved to a shiny new PC system and left this building for our high school to use as a programming lab. I wish I had photos of it all.
Anyway, I never worked on them, but I did do BASIC, COBOL, and RPG-II on them. We did have some full-sized stations, too, which I usually was able to get hands on.
The dual stations did present a challenge for screen design for menus (SDA) or some BASIC games I wrote, having need for a lot of screen realestate. ISTR that menus could automagically adjust for the half-height, and BASIC would paginate.