You can invest more in your existing folios/mutual funds by following these steps:
1. Go to 'Dashboard' by pressing on the button below
2. Click on 'INVEST' next to the fund in which you want to invest more
3. Choose 'MONTHLY SIP' or 'ONE-TIME'
4. Enter the amount
5. Make the payment to proceed
Note: For monthly SIP, it is best to have an approved AutoPay mandate for automatic monthly payments.