Have you verified that your DMX interface is compatible with OLA, and confirmed end-to-end communication is working? I would say that is the first step. Then you will need to find or create fixture definitions for any of the lights you want to use, measure out where you are going to hang them, and create your show definition which patches the right fixtures at the right addresses and physical locations and orientations. Then you can start creating cues and assigning them to the grid. Are you using any physical grid controllers, or just the web interface? And are you trying to do any kind of synchronization with Pioneer Pro DJ Link, Ableton Link, or MIDI clock? Trying to do all this for the first time by Sunday may be a bit ambitious, but I will help as much as I can (I am busy at work this week though).