They ovulate on their own. If you keep them separate and then let them be together for breeding, it will stimulate her to ovulate more. But there's nothing else YOU can do. Her body will decide when she's good and ready.
Yeah, they do ovulate on their own. I keep mine in the cage with my male (about 6 females). I knew that too many geckos aren't good, but when I seperated them, they started climbing on the cage and stuff. Mine has certain friends and enemies, so I got a big cage.
They usually do on their own with or without the male. Mine start getting gravid and laying around June. Then they stop in mid september.
The reason why mine start in the summer is because my bedroom is the same temp. as it is outside. In the spring, the males will vibrate their tails at the female, but won't mate, then around May, one (always the choc. albino) gets gravid, then the males go crazy in the summer, especially with the same choc. albino, because she never rejects breeding, around september, it cools down, so they stop, and the winter is their cooling period.
In the summer, they get no heat lamps, the temp. in my room is always 80s-90s.
I wonder how certain breeders simulate temperatures to keep them breeding all year. I tried that in the winter, using higher wattage bulbs to keep them mating, but it never helps.