Linking new bracket orders to existing ones

Please add ability to link TPs and SL like Ninja Trader does. Example: f i enter a position with 1 contract and use an ATM with a certain SL and a certain TP, those orders will be plotted there nicely. However, if i decide to add 3 contracts to my trade during an ongoing trade, the price of the actual position will change to average up or down, now giving me my positions for the 4 contracts. The SL and TP for the new 3 contract order will be different, as expected to be. However, I’d like to be able to have the option to link and unlink the new SL and TP open orders to the existing, first SL and TP order, to make it easier to move them more quickly. Can you do that?