Will other female lay eggs in his log while their is eggs already in their.

I had 2 females who both looked like they were gravid. One has onviously laid some eggs in the males logs. My question now is will the other female lay in the same log while eggs are there. Or hold on till they hatch and then lay the eggs. Or will she just go into another log. I only have the 1 mature male atm. Also is it recommended for the male to be bigger and older than the females to breed or it doesn't mater.

if the male will let her in she could lay her eggs in there too. my male will let 2 females into spawn after each other.

It's not unusual that a male will mate with more than one female and have fry and eggs in the same cave.