Adobe InDesign - Manual (Page 824)

Twitter™ and Facebook posts are not covered under the terms of Creative Commons.
Legal Notices | Online Privacy Policy
Note: You cannot tag grouped page items.
To group page items, select New Element from the Structure pane menu, select the Article element in the Tags panel, and then drag page
elements underneath it in the Structure pane.
To name grouped items, right-click the Article element in the Structure pane and choose New Attribute. For Name, type Title. For Value, type
the name of the article you want to use.
Adobe also recommends
819