Hi, I am a littlebit confuse to place an option rollover order. I understand the concept, you flat the position of current month, and you open a position next month. However, my confusion is on when you place orders(spread order) Let say I have cash-secured put contract Short a 04/12 $10 Put Contract bid/ask: 0.11/0.15 and I want to roll to "05/12 $10 Put Contract" bid/ask: 0.18/0.21 when I want rollover, I place an order and add an option leg. long 04/12 $10 Put 0.15 short 05/12 $10 Put 0.18 the condition is what I confuse. limit buy limit sell which one should I use? I only can choose one should I use limit buy or limit sell? and the price there? Can some experienced traders clear my confusion.