No, you can’t make selective payments. If you have enough money in your account, you can pay all returns and all requests for early withdrawals of principal deposits (if there are any). If you do not have enough money, you can’t make any payments.
This restriction is made for Trade Groups’ owners not to pay return separately to rating and monitoring agencies while leaving ordinary investors without profit.
All investors are equal at the Service. Therefore, profit is either paid to everyone or to no one.