Dear,........... If 6 months will be finished when they will arrive doha, then you need to pay 500 for the extention. The oofice is called Border immigration something.. It is near old airport behind the ooredoo and qatar airways building and beside Oryx rotana. Once you pay 500 (They will get extention i think 3-6 month more) they can come back only after you pay. You can goto any typing center they will make the form for you in 10qr and then you can directly goto this office and get it extended same time.
Dear,........... If 6 months will be finished when they will arrive doha, then you need to pay 500 for the extention. The oofice is called Border immigration something.. It is near old airport behind the ooredoo and qatar airways building and beside Oryx rotana. Once you pay 500 (They will get extention i think 3-6 month more) they can come back only after you pay. You can goto any typing center they will make the form for you in 10qr and then you can directly goto this office and get it extended same time.