Hi, I trade futures and some friends of mine want me to trade for them as well. I've checked with IB it seems that F&F account may work that way. I want to do it for free for my friends but at the same time don't want to affect my own P&L. I want in every trade to have the first 3 contracts allocated to my account and the 4th and after be allocated to my friends' accounts if any, as I may not be able to have all contracts (say 5 contracts) filled in every trade, and they may be filled in different price levels (entry/close). So I wonder IB would allow me to allocate each single contract to go to which sub-account after trade. Say I completed 50 contracts in 13 trades in a day, and then I can manually allocate after trade, #1-3 to my account, #4 to B account, #5-7 to my account, #8 to B account, #9 to C account, #10-15 to my acount, #16 to B account... etc. Anyone knows or have other better ideas? Many thanks.