You cannot send Bitcoins to someone else if you do not own Bitcoins yourself. If you hold Bitcoins and wish to send some or all of them to another wallet, click on the Send Crypto button under Investments. The list of all 14 tokens on CoinDCX appears on the screen.
Click on Bitcoin. You can now either manually enter the public address of the receiver, paste it from your clipboard or click a picture of the QR code of the wallet to add the destination address where you wish to send the Bitcoins. Make sure that the address is correct as Bitcoins once transferred will not be recovered.
Based on the amount of Bitcoins available in your portfolio, enter the amount you wish to send. The withdrawal fee will be deducted from this amount. Once you agree with the final withdrawal amount, click on Continue to complete the process.