Pl prepare following documents to obtain Family VISA,

1. Degree or Diploma certificate attested from India/Qatar
2. Marriage Certificate attested from India/Qatar
3. NOC / Salary Certificate from company.
4. Six months bank statement.
5. House agreement in Qatar.
6. Either of your Passport should have spouse name.
7. both of your passport copy and sponsor ( Husband ) RP copy.

once the above documents are ready then he can apply for Visit Visa for six months and later it can be converted to Family VISA from here.

Also tell him to check with his company Immigration department for further information.