Can't set permissions, they don't stay checked
On the cart page, anonymous users don't have a button to finalize their order. They only have the button update cart. Admin users have both.
I wanted to give some permissions to Anonymous users such as 'access checkout' but the checkboxes are not saved. I mean I check them, then click Save, the page reloads and the boxes are unchecked... WTF ? :) Do I need to enable certain permissions before I can enable some others ? Or is it just my website that going crazy ?
== Admin Note:
I've approved your answer below and moved your "comment answers" to the comment field. We queue most of the new accounts until we confirm you're not spamming us :) Thanks for sharing your answer!