Question about flushing out radiator?

thank you for such a quick response. Yes i was very confused still do not understand why they put that in my manual... So just the drain plug it is thank you..

I was going to use Prestone flush+ cleaner the ten minute flush they call it. then flush with hose using water then refill with antifreeze and water.. I decided to do it because when I checked my levels noticed the radiator to be rusty inside. Never had overheating problems. When my pop passed I got the car He took very good care of it I am just trying to do the same.. Very limited on funds wanted to do it myself.. Thank you. So I guess just unscrewing radiator plug is ok. thank you for your help.

that will work,good luck

thank you