Using GIT on Aptana 3 standalone

The only references I see to GIT in Aptana Studio 3 (the standalone version) are under preferences where the only field is to identify an executable (do I need to do that?) and importing a project, where it asks for a repository uri. I see nowhere to configure user information for a particular repository, and, if I need to install a plugin, nowhere to do that.

Under App Explorer section there should be a gear icon, click on that, then click initialize git...

The following worked on my Mac OS:

Open Preferences → Team → Git and try to change the path of the "Git Executable" to /usr/local/git/bin/git.

On Windows, you'll find the preferences here: Window → Preferences → Team → Git.