Editing PowerPoint Accessibility Best Practices (section)

=== Assigning alternate text to complex objects ===

All the elements in a chart or figure should be grouped together, with alternate text applied to the group.

* Select the objects that make up the chart in either the Selection Pane or directly in the Slide. 
* '''Drawing Tools''' > '''Format''' > '''Group''' > '''Group'''
* ''Select the group object'' > ''right click'' > '''Format Shape''' > '''Size & Properties''' tab > '''Alt Text''' > '''Description'''

''N.B. There is no built-in way to confirm how TTS will handle a group with alternate text assigned to it. The desired behavior is that the alternate text would be read out, and any text within the group is ignored.'' 

''There is a &ldquo;Speak&rdquo; command in PowerPoint, but this will only speak selected text. It is disabled when a Group object is selected.''