To sell mutual funds, you would need an Investment Account. Once you have that, you can start placing orders to buy/sell mutual funds through Kotak Mahindra Bank's net-banking services.
Here is how to do that:
1. Login to Net banking
2. Go to Investments
3. Click on Transact Tab
4. Select Redeem Tab
5. Enter Folio, Scheme, and the amount details to be redeemed.