OINP - login, registration and application process clarification

[Ishaniarya]

I have recieved NOI from Ontario. Kindly clarify the next step.

Do I have to login on OINP website, register and submit online application with in 45 days from issue of NOI

Or

OINP will notify registration opening then only I can login, register and submit online application within 14 days.

Kindly explain the step of OINP login, registration and application submission process