usually valid for 3 months to enter Qatar from the issue date. this is single entry visa. once your family reach here, do the medical at medical commission in abu hamour at earliest. once the result is OK , you usually get SMS after 2-3 working days otherwise check result at there website. If result Ok then proceed for fingerprint for all members above 16 years .If CID / finger print cleared you will get SMS from MOI if you register your mobile in METRASH from now. Then you you can go residence QID / Permit endorsed in MOI office.Fill RP approval form with their signature and passport photo. In MOI , they will take around 100 qar for all adult members. for kids, they will just enter sticker in their passport and usually don't charge .