To start a lumpsum (one-time) investment on Groww:
1. Tap the 'Mutual Funds' tab at the bottom.
2. Click 'Explore Mutual Funds' at the top.
3. Search or select a mutual fund.
4. Click 'One-time' on the fund page.
5. Enter the amount.
6. Check your phone/email for a 6-digit code.
7. Make the payment.
For more details, press "EXPLORE MUTUAL FUNDS" below.