Hey buddy you can get the DD for the SBI bank online by the following way

Visit the official site for the SBI online

An image like below will open

Login to your Online SBI account.

Click on 'Payments/Transfers' tab after logging in.

Now click on 'Issue Demand Draft'

Enter 'Profile Password' to go further.

Now enter the details of the Demand Draft

You will be charged commission for the DD. For me, the charge was Rs. 5 per Rs. 1000 i.e., 0.5%. Then verify details and confirm the transaction.

You will receive 'High Security Password' on your registered mobile number. Enter it and click 'Confirm'.

Now you will get the 'Transaction Reference Number' along with the DD details.

You will get the option for printing counterfoil option if you chose the 'Collect in Person' option.

Print the counterfoil, take it with you to the branch during the bank working hours, show it to the bank official and collect the DD.