Open the Zerodha Coin app or Coin website
Log in with your Zerodha credentials
Search for the mutual fund you want to invest in
Open the fund details page
Select the SIP option
Enter the SIP amount
Choose the SIP date
Select the bank account for auto-debit
Review the SIP details
Confirm and place the SIP order
Complete the mandate setup if prompted
Approve the mandate through your bank or UPI
Wait for SIP activation confirmation