Newbie - how to program expansion module

Hi All, I am new to the brightsign world so please be gentle on me. After talks with brightsign We have bought the following system for a client - HD1010W - Expansion Module to accomplish the following - touchscreen that can play one of two videos to one speaker - two physical buttons that can play one of two audio files to a secondary speaker - an motion sensor that can play an audio file to a third speaker My understanding is that all this is possible, however I am I correct in thinking that I will have to script this myself as far as I can see BrightAuthor does not give me any access to the expansion module. If so how do I even start going about this. I see lots of posts showing custom scripts but I have no idea even where to put these scripts. Do I have to create a custom autorun.brs and if so where within that behemoth of a file do I add the customization. This demo unit is meant to be delivered to the client by end of day tomorrow (Friday) and I am concerned about the learning curve. I had assumed all this was easy with drag and drop in BrightAuthor! Help please! Thanks, Patrick.