Add Revision enables you to add new revision to an article. Note that, at any point of time, only one revision can be active. However, you can change the activation to another revision at any point of time.
Steps:
Open an Article, to which you want to add revision.
On the Article docked split container,
in the Details node, click Information.
In the workspace, select Article
tab.
On the ribbon bar, in the Revision
group, click Add Revision.
The revision is added to the article.