OK then, so I suggest the usual: each candidate will need the backing of twenty (20) signatures. In the event of more than one nomination, we'll need to instigate an election process. Obviously, the most sensible way to do this is a two-round procedure, where we use a single-transferrable vote to whittle down to two candidates, and a second round to decide the final victor. We will of course need to do this for each committee post, but it's a pretty straightforward procedure, so won't be much hassle to implement.