Not quite sure about Religare, but in General most Charter / NSOP Guys are decent if not great in most respects.
All the questions you have asked are very company specific and completely depend upon the Employer. I hope some one who knows more can shed some light.
Although If you can speak to the company get hold for their HR Manual or Something alike which will tell you how they plan to treat you as a Pilot with them.
If I were you, I wouldn't be a choosy.
Fly Safe !
Silent.