Salary certificate attestation

Hi,
I am from Ruwi, I want to attest my salary certificate and bank statement. So first I want to go Chamber of commerce, then Foreign affairs then Indian embassy. My doubt is can I go myself alone to all this place to get attested my certificate? Anybody knows the fees of thees offices charging for attestation? How much time will take in each office to be attested? can I complete this in one day?
Please advice.

As long as the matter belong to yours then yes you can do it your self i did attested my wedding certificate my self at ministry of foreign exterior affair.

But don't forget to take your bank card , ATM with you because all government payment in oman via ATM Card .

All the best