Change grid scale or scale whole library

I've got a modular asset pack, but the sizes are 2.5 units. Which makes it really annoying when you try to snap move something and then it will only snap to either 2 or 3 meters. Can I make the grid size to .5 metres like you can in, IDK, pretty much every other software?

Or at the very least scale all the assets in my library at once so I won't have to manually type in the location every time I need it to be either 2.5 or 7.5 or 12.5.....