traling stop

good is it technciamente possible to insert the trailing stop after opening a position? , moreover it is possible to insert in sell or buy in trailing order let me explain better, I place an example order at 30 ticks and the price follows me when this retrace of 30 ticks enters me the order at market in sell or buy as I decide before thanks, I have seen this function in other platforms but I don't remember what it is called, thanks