when i try log in before market opens ,it doesnt let me set anything saying exchnage is not open in pi.
You need to use the after market order option. Add 320CE on your marketwatch, right click on it, click on aftermarket order and sell (Ctrl + F2)
You have the option to place AMO Sell order for your open buy call,but you may feel pain ones your position exit,you can see much vary between bid price ask price especially for options ones market open so advisable to place order after market open.