This is a tab in the DOM Setup window. The scale orders command automatically creates a series of buy (sell) limit orders with incrementally lower or higher prices, based on the original limit order whether it is a Stop or Limit order.
For an open position with limits on stops, scaling in/out either increases or decreases the open position and corresponding limits/stops proportionately.
Scale In-This is a command button on the DOM that automatically executes a buy or sell order at an incremental factor that increases the position at the market
Scale Out- This is a command button on the DOM that automatically executes a buy or sell order at an incremental factor that decreases the position at the market. . The Scale quantity is set in the DOM.