Click on Principal Entity and then select New Registration as shown below:
In the page shown below, if you have NOT registered with any other operator, select "No" and proceed.
If already registered with other operators, please select "Yes"and enter the entity ID
In the page that appears, as shown below, fill in the details and upload the documents requested.
Once done, click submit and you should receive an acknowledgement as shown below if all the details are correctly entered.
One email will be received post this for the successful completion of the registration
It is highly recommended that Entity registration is done across all operators.