The female lays the eggs in one spot and all at once, from what I've seen.

If you have more than one female then they may lay them in the same spot or separately.

During the breeding season/cycle, keep an eye out on the females and if any appear gravid and then skinny then look around the viv for eggs. A female can lay serial clutches during the season and these are around 3-4 weeks apart.
An individual female may use the same spot as before or different.
Complicated viv set ups can make it more difficult to find the egg clutches.

During egg laying season be sure to supplement(dust) food with VitA Plus from Repashy twice a month as their needs for VitA go up during this time.