Registration for ptec for the state of maharashtra

Hello Everyone, 

I am a freelancing Consultant and currently do not have any full time employees on board, As I am already registered on GST, I am now trying to get myself registered for PTEC.

Have a few queries:

1) What are the andatory documents required for PTEC for a proprietorship firm?

2) Do I have to visit the MGST office personally to complete the application process or I can complete the entire process online?

3) Should I take help of an external Consultant or I can easily do the process online myself?

4) Apart from GST and PAN number do I require any other details of my firm?

Thanks in advance for answering and helping!