Three agencies : F2R in UAE, Confair in Netherland and I forgot the last one.
Salary explained here :
SmartLynx
With them it's bargain, you offer, you get.
So far I don't have major pb except what has been said : travel team can make weird choices... Call them and tell them what you want.
About roster changes in rest time, they need your confirmation and you have a doubled off-day removed fee if you agree if they change it once published.
India project for this winter with 3 rotations : 23/8, 30/11, 45/16.