Supporter, Paypal, Cancel Sub

Hi I have some questions relating to supporter plugin.

I need detailed instructions.

1.) Which paypal plan/package/solution works best with supporter from a business perspective?

2.) When a member of my website signs up for a supporter subscription, how do I keep track of them? How do I know who is a supporter and who isn’t?

3.) Provide detailed instructions on how to cancel a supporter subscription. I have experimented with the sandbox, there is no clear option for a member to cancel their annual supporter sub. Once they have canceled will I as admin be informed?

It’s not a good thing if it is difficult for someone to cancel something they are paying for.