CRM Plugin Registration Tool

Hi:
I am started developing Plugin for CRM, but following tutorials, I have found that I should Sign my project, and for that purpose I Downloaded Dynamics CRM SDK 2016. and found, Plugin Registration Tool...

opening it I have found the following form:

here i did not get radio button for Online.

but here in this link it is told that it has radio button for online.

https://msdn.microsoft.com/en-us/library/gg309580.aspx

what should I do if I wanted to connect to online Dynamics CRM.

Thanks.