how to not fill the entire space with generative fill

[Bmac60506]

I am wondering if there is a way to setup margins for how far out the fill will go, so there is still room to make selections and it does not cut off parts of the image?

Thank Bmac

[Fresh Studio Photography]

If I get the question right, all you need to do is to leave a margin in advance before filling in all the space so you can come back to the remaining room for correction.

[Bmac60506]

it still seems to be generating out the selection, I was hoping that was the fix lol