In the simplest terms, each week the partners put in a certain amount of money, and they rotate turns to use it. Lets say you have 4 people putting in 500J; each week one of the partners gets $2K to invest in their business. Maybe they don't use all of it, but retain a portion to build up some equity in the 'fund'? Not sure on that. Obviously requires trust between the partners. I have read of very trusted persons being the 'keeper' of the funds/bookkeeping for several partner relationships.

Smith, if you are there this month, maybe I will see you.