So, what I arranged are-

1. Copy of passport of me, my wife and son. (first 2 pages and visa seal page for me and first 2 pages for others)

2. My educational certificate attested from Bangladesh foreign ministry

3. Marriage certificate attested from Bangladesh foreign ministry and notarized (red ribon)

4. Birth certificate of my son attested from Bangladesh foreign ministry and notarized (red ribon)

5. NOC from employer

6. Rental agreement and 1 month electricity bill copy

7. Bank statement for 1 month (as I am in qatar for 4 months and just opened bank A/C last month)

8. Visa application form filled in Arabic and attested by company

Please confirm if I need anything more.

Thanks everyone for kind advice.

-Anwar