Ever since Version 8 there is no easy to way (frankly there isn’t even a hard way) to set Anchors on Grids and have them auto resize with the form without spending 10 thousand hours fiddling with it.
They automatically expand past the border of the form (or any container)
They shuffle and shift around and hide and move again and are just down right hateful
And if by accident you touch any of the built in grids in particular in Order Entry you can kiss the rest of your day good bye trying to put it back.
I have scrapped and restarted entire giant customization because I’ve accidentally touched the main grid half way through and not noticed and the time investment in fixing the grid wasn’t worth it.