If you have power of 2 in UE4 then you’ll want the same thing in Maya. So for example set your grid" length and width" to 1024 and “grid lines every” to 128. This will give you 8 grid lines. Set as many subdivisions as you want, say 2, 4 or 8.
Power of 2 literally just means numbers in multiples of 2.
Just to clarify, of course 1000 is dividable by 2, but the idea behind it all is that you go with multiples of 2 so you’ll never run into decimal numbers. Say you have a piece that’s 64 wide. You want to put one other piece and 2 smaller pieces into the same width. So let’s say one 32 and two 16. If the piece was 100 wide you’d have one 25 and two 12.5 which isn’t very convenient.