The Rule: follow up on experimenting some form of direction in collab events. As soon as there are 3-4 persons, they start a project together and jam for 45 minutes. One layers a track, and another one another track, related or not. Any quantity, any quality, but after 45 minutes... it's election time! Each member of the project votes for a president of the project (everyone's a candidate, even you, shy person reading this). Once elected, the Presidente has a mandate: finish the track, and a special power: direct others by asking for some parts, keeping and droping and editing what he wants, how he wantes (including asking someone to do it, because that's what presidents do anyway). The others form his/her government, in charge of bringing the president's vision to fruition. Oh, they call him/her "Mr./Ms President", of course. The goal is to finish overnight but if this can't be done, then over the week end ;-)
(Note thus that being the project's president doesn't mean he/she has all the rights/credits if the result's a hit. Should this happen you'd have to settle an agreement and share the millions like all musicians do.)
You'll be able to join one or many of those projects via the public tab (they'll be named Demohmcracy something). You can also ask Red_Force or Jamie on the chan if you feel you could get some help. We'll be there until 2AM GMT at least but probably longer. Beginners welcomed (download here, setup audio and learn the basics here)!
Oh and if you don't know what those collab fridays are about, this should help.