How to apply IPO (ASBA) online

Hi, From this forum I came to know that we can't apply IPO through zerodha. So I am trying to apply for SNOWMAN using my Axis bank account. I don't have any idea about the fields in the below form. I googled it but helpless. It would be really helpful if anyone could help me? What should be the depositary name (NSDL or CDSL) and where can I find the beneficiary A/C number.

Typically the back office terminal should have all this information for you. Else do call your broker to help you assist with the same.

Lets say i have a zerodha account( with ILFS as my DP) and also another demat account with HDFC Securities or ICICI Direct. Can i use ICICI ASBA facility to apply for IPO and get the shares remitted to Zerodha/ILFS DP account?
Is ASBA access available for normal ICICI / HDFC saving bank account holders or should we need to have demat accounts with them?