How to show "delete" for a document?

I'm a new user and feeling my way along. So far, everything works great. I have set up different user groups and user access categories to show or not show items and all seems to work fine. I've found and set up the ACL in the options for the manager group so they can add, edit, delete, etc.
Where I am having a problem is with how to show the "delete" button or whatever it is... I get the articles to show with the green download button but can't seem to figure out how to provide a means for the manager to delete the items from the front end. I'm guessing front end deletes are there? Might not be, I just don't know.
Can you clarify how this should be set up to work?
Thanks,
Stuck...

Hi James

Please see my response on support ticket. Basically, the Delete button won't be displayed on Category table layout. Please try to switch to category default layout or access to document details page and you should see the Delete button.

Regards,

Tuan