A comment was left on one of my TypePad how-to posts with this question:

We would like to be able to differentiate between my posts and hers, but currently, typepad doesn't display any "posted by..." byline at the bottom of the page.

Here's where to set the Author Byline with a TypePad Pro account.

After signing in, click the Weblogs tab

In the list of your blogs, find the blog you want to work with, and click the configure link

Click the Design tab

Under the Post Footer section, click configure

A pop up dialogue box will appear.  Check Posted and Author (and any other items you want), then click Save Changes at the bottom of the box

That will return you to the Content Selection page, click Save Changes at the botton of the page.

Next you are returned to the Design tab page, click Republish Weblog at the bottom of the page.

Proceed with publishing.... that should do the trick.

If you want to use an icon/avatar for each author, you will need to switch to Advanced Templates, and manually insert a few lines of code.  If you want to do that, let me know.