Upgrade account page in membership plugin

After a user registered, the next page he sees is one that say that he is a free user and gives him the option to upgrade the account by selecting one of the available options.

How is that page called for existing users ?
After going to homepage, there is no way to return there.

The idea is that when user go to his profile, he sees a section where he can upgrade his account, telling him what are the available options and the way to upgrade.

Where can I setup this ?
I need to create a new page just for this ?
Can it be integrated in the profile itself ?
Are short codes needed if its a new page ?

Can anyone please help ?