Repeat keycommand after button hold.

Back with LCC, I would be able to assign a key command to a button on my MX mouse. If I held that mouse thumb button down, after about 1 sec, the keycommand would start repeating. (I used this function to turn pages in a program. with a Cmd-PageDown command.) However, now with Logi Options+ they key command only works once, and I can't turn multiple pages by holding down the button. Can we add this functionality back? It would really help me.