How much setting spray should I apply?

I usually use setting spray to finish my makeup.

But back then

I just spray it lightly.

It's getting hot, so I'm wiping my sweat and making corrections.

I'm worried that if I do it, the staying power will drop again.

Should I carry it around and spray it frequently as well?

Since I've been using setting spray, I'm not really sure how much to spray, and I'm curious.

How is everyone using their fixer?

I am curious