This isn't intended to be "the answer" since you figured it out on your own...still, what would be nice would be to write a reply (rather than the comment) detailing what you did or discovered, so that someone else could read this post, see the answer, and benefit from it. When you say "never mind, I figured it out", you miss an opportunity to help a fellow user.
Essentially, during scores entry, assigning the letter "T" indicates a bowler to be a Temporary sub, as opposed to "P" for Permanent sub (a member of the roster who doesn't always bowl, but only bowls as a sub on one particular team). Then, in the weekly standings, the temporary substitutes (which is an optional item that can be included in standings) will display a listing of those subs.
You would have to further modify the Report Style for the temporary subs to include, say, a phone number and/or e-mail address as you state in your original posted question. I won't get into the details of how to do that as it appears that you figured out how to also do that, unless someone else adds a reply or comment asking how. The ways to do these things do appear in the manual...I do not have my computer with me, so for now all I will say is that in the Help menu, you can open the manual in Acrobat Reader and search that document for "report styles" to find where in the manual this is (I would post the page[s] if I had such manual available).
Always check, download, and install the most recent update of your software to ensure that issues may have been corrected.