Depending on what level of access Article Manager's administrator has afforded you, you'll be able to do different things with the program.

Here is the different User Types:

Writer
A Writer is able to submit articles to some categories, but is not able to make them appear on the website. Also, once a Writer has submitted an article, it cannot be modified by anyone other than an Editor.

Trusted Writer
A Trusted Writer is able to create articles in some categories, and can make them visible on the website. Also, this user may see a list of any articles that they've created. Any of these articles may be modified or erased.

Editor
An Editor has full control over some of the categories on the site. This user may modify and delete any articles in these categories. An Editor may also view articles that have been submitted by Writers, these articles will have a status of "pending". By modifying these articles and changing the status to "visible", the Editor can approve these articles and make them display on the website.