If you want to sign up for ACCA, there is a list of things you will need to do. You can read it up on Kaplan's web or SAA's. Basically:-
1) Register with ACCA & ICPAS
2) Then choose which module you want to take for this July.
3) Choose lecturers, not school. Meaning, maybe I like Sami for F7, he's from Kaplan, and I like Mr Chee for F8, he's from SAA, then either choose to take them on at separate school, or plan it another way like, maybe I can take F6 (yvonne) & F7 at Kaplan first, then next sem, then I take F8 and F5 at SAA. Something like this.
4) Each school now requires you to buy their student protection insurance thingy. which cost $25 (before GST), valid for one year. So plan your modules carefully.
5) Exam fees is separate.
6) Annual professional fee payable to ACCA & ICPAS.