If it is for your wife or mother then pp copy , tenancy contract , e+w bill of 2 months , your pp copy +rp copy is good enough for the visa application .

If your wife is here in doha and yr mother aged over 60 wanna come then you need approval of the officer at emigration , then your application will be processed.

You can apply from the office nextto mosque opp airport.It takes 15 mins if you go at 7 am morning
or 6:30 am still faster.