Dear llumpy84,
Unfortunately ActTrader does not support partial closing of positions by Stop or Limit order.
In the current version of the platform the Stop or Limit orders can be set only for full position amount.
Instead of stop and limit in current situation we suggest creating your own custom function that will manage opened positions and close a part of them instead of stop or limit. Based on close position function – you will be able to select the number of lots you need to close according to your strategy logic.