And now the longer answer to your question!

There does exist a cumbersome "workaround" that I use whenever I need to do this, which is the following:

1. Before you've entered any melody, so only your chords are entered, transpose your whole song to the key you want the section to be in.
2. Select all the bars of the section you want to be transposed with your mouse and cmd-c to copy to clipboard.
3. Transpose the whole song back to its original key.
4. Select the same bars that you selected in step 2. and hit cmd-v to paste the transposed chords in.
5. Go into the Bar Settings at the first bar of that section and change the key to match the new key.
6. Continue working on the rest of your song, add melody and so on.

And you're (finally!) done, yayh crazy

Just because you can, doesn't mean you should!
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BBox 2022 Audiophile, Mac Pro Intel, OSX 10.6.8, 800x600 (TV VGA)