Unfortunately, you can't.
In the immortal words of John Langhans [MSFT]
"Also, if you (or anyone else reading this message) have some suggestions
for how PowerPoint might improve it's implementation and control of
automatic and intelligence capabilities, don't forget to send your feedback
(in YOUR OWN WORDS, please) to Microsoft at:
http://register.microsoft.com/mswish/suggestion.asp
It's VERY important that, for EACH wish, you describe in detail, WHY it is
important TO YOU that your product suggestion be implemented. A good wish
submission includes WHAT scenario, work-flow, or end-result is blocked by
not having a specific feature, HOW MUCH time and effort ($$$) is spent
working around a specific limitation of the current product, etc. Remember
that Microsoft receives THOUSANDS of product suggestions every day and we
read each one but, in any given product development cycle, there are ONLY
sufficient resources to address the ones that are MOST IMPORTANT to our
customers so take the extra time to state your case as CLEARLY and
COMPLETELY as possible so that we can FEEL YOUR PAIN.
IMPORTANT: Each submission should be a single suggestion (not a list of
suggestions).
"
--
<>Please post all follow-up questions/replies to the newsgroup<>
<><>Email unless specifically requested will not be opened<><>
<><><>Do Provide The Version Of PowerPoint You Are Using<><><>
<><><>Do Not Post Attachments In This Newsgroup<><><>
Michael Koerner [MS PPT MVP]
I cannot seem to find a way to create a double-underline, such as is