You can do it in two ways:
Stocks bought with MTF appear under the Positions tab (not Holdings). So, you need to exit your ‘positions’ within 90 days (of your purchase).
You can also convert the MTF positions to Demat holdings (Delivery) by sending us an email. Do it within 90 days of your purchase. Make sure you have enough funds in your Upstox account to repay the borrowed amount. An additional Rs. 20+GST will be charged as your shares need to get unpledged from CDSL.
Note: Only those stocks, which we receive as per the T+2 (trade day + 2 days) cycle can be converted to Demat holdings (Delivery).