How to Add a Return Character to a Heading
Headings that appear in PowerPoint are taken from the names of the tables and charts as they appear in the Report in Q.
Word-wrapping in headings can be controlled by inserting a line break: hold down Alt and type 0182 on your numeric keypad to enter a ¶ character. When you export, the ¶ will be replaced by a line break.
See also
Automatically Including Weights, Filters and Dates in Headings