Depends snow white! We have the same problem. What we do is:
1. Run a waiting list for plots
2. Let plots and make sure we have tenancy agreements printed out and available
3. Take rents and make sure the treasurer knows who has paid what
4. Do two inspections a year, issue warnings and evict on second if no excuse for non cultivation
5. Organise repairs to the infrastructure - gates, fences, external fences and such so long as treasurer says we have the money
6. Order skips if a site has a lot of rubbish
7. Peace keep between tenants
8. Run a trading hut which has the start of internal painting today being done by two committee members; treasurer has to be informed of all sales and store keeper has a record of what is sold so that it can be replaced
9. Order stores for the trading hut
10. Advertise when the waiting lists gets too short - social media, hard copy adverts in the town notice boards
11. Make sure we have policies and procedures in place for on site bonfires, dealing with vermin, how we do inspections so that people know how we do it, how we do lettings and run the waiting list, what we will allow in the way of buildings on allotments and all sorts of other bits and pieces
We have a committee of 5 and a half people and we are severely stretched. No one seems to be willing to join us. We may have to say to the town council run it yourselves as we don't have the volunteers. 3 or 4 would be an awful lot of work. We have 100 allotments; how many do you have snow white?