Hi RickPat & Welcome.
If your just using the MS Office Test Drive it may not have any additional Assistants. Sorry.
If you installed Office from a CD insert the CD into your drive. Double click the Value Pack folder. Double click the Value Pack installer icon and select the Assistants check box to install all the assistants. To select individual Assistants click the triangle next to the Assistants option then select the Assistants you want.
I like Scribbles myself. My cats get a little jealous though, consider yourself warned;).
BTW if your currently running MS Office trial version and decide to buy the full version make sure that you run the Remove Office BEFORE you install the full version. You can do this by: Macintosh HD/ Applications/ MS Office Trial/ Additional Items/ Remove Office. Then restart your Mac. Some versions it may be: Macintosh HD/ Applications/ MS Office Trial/ Remove Office. This will save on conflicts between the two versions. Microsoft.
Be sure to run Permissions repair before and after any software update, upgrade, and/ or install. Macintosh HD/ Utilities/ Disk Utility / Select HD and click repair permissions.
For more on conscientious Mac Maintenance (Thanks Ronda Wilson for the links):
http://www.thexlab.com/faqs/performance.html
http://discussions.apple.com/thread.jspa?messageID=971817