If You want to withdraw money from Your Demat account you need to go Ledger or Funds Option and there you see withdraw option then you tap on withdraw and enter amount you want to withdraw then it is process and you get money in your bank account linked with Demat Account I.e if you have account in Upstox you go to Funds and you tap on funds and enter amount you need to withdraw then you get money according to timing of broker I.e2 or 3 days