i think you area asking about your family stay more than 6 month out of Qatar under Permanent visa(RP) category, if i am right, you can pay the fine at Airport Immigration department (regarding the payment by your friend, i dont know), it is called "Return visa" you have to pay Qr.500/- per person, and their RP must be valid. and the validity of the RETURN VISA is 14 days only, candidate must enter qatar with in 14 days from the date of issue of RETURN VISA.
i think you area asking about your family stay more than 6 month out of Qatar under Permanent visa(RP) category, if i am right, you can pay the fine at Airport Immigration department (regarding the payment by your friend, i dont know), it is called "Return visa" you have to pay Qr.500/- per person, and their RP must be valid. and the validity of the RETURN VISA is 14 days only, candidate must enter qatar with in 14 days from the date of issue of RETURN VISA.