On your arrival get a token for Attestation / Legalisation of documents from token machine and wait for your turn in the waiting area.
When your token number is displayed on the screen go to the counter. The serving official will examine your documents and
once satisfied, he/she will issue you a Challan receipt for payment of the required fee.
Pay the fee at bank counter and go back to the first counter to submit your documents with the fee payment receipt.
The serving official will receive your documents and will issue you a receipt with collection time for your attested
documents (usually same day).
Present your receipt at the counter during the collection time and collect your attested documents.
Carefully check your documents before leaving the counter.