Autotrade Scale on individual Futures contracts?

I run an account that primarily trades futures, using a 2X Autotrade scale setting. Given different face amounts and volatility for futures contracts, and the varying $$ value of a tick (or 32nd) - sometimes I would prefer to trade just ONE futures contract. Ex: the T Bond Future ( "@US"). Is there any workaround with Autotrade I might consider, to reduce or restrict trade size on some individual futures contracts, when using an overall 2X Autotrade setting? MH