SXT SA5 (as mode AP) several SXT Lite5 (as mode S)

Hi!

I want to make this project. (look attachment new_schema)
I beginner in wireless technology, but i have to realise it since this is my task on work.
I have working schema. (look attachement old_schema)

How i can setup new SXT SA5 (as AP) to order to it can works with old SXT Lite5 (as S) ?

Many thans for advices!
new_schema.jpg
old_schema.jpg