I am just a pmpro customer and I thought the same thing and you are mostly right, but there are a few things you can get info on.
You can go here and sign up for a free account and that will let you look at some basic help docs.
Also here are some shortcodes that I have for pmpro that might be what you are looking for.
There is one shortcode for restricting access to content. Place these in any post or widget to show certain content to certain membership levels.
[membership level="1"]Will only show up for level 1 users[/membership]
[membership level="1,2,3"]Will only show up for level 1, 2, or 3 users[/membership]
[membership level="-1"]Will show up anyone not in level 1, including non-members[/membership]
[membership level="0"]Will show up for non-members.[/membership]