MT4 expire date & time for Placing an order

I will be using the pending order (both buy/sell stop) to enter the market via MT4 platform. For the day strategy I will be using, I do not want any unexecuted pending order for that day to be carried over.

My first option is to cancel any pending order that has not been executed.

My question is, how does the “Expire” option work on the MT4 interface if I set a date, will it close the order whether it is pending or has been executed?

Thanks