Honestly finding a folder is a basic functionality I think. Especially for a Mac user... Try looking for "templates" and make sure it searches hidden folders and system folders and any other locations that are not being shown by default. Or search for *.htm files with the same options.
[EDIT] I got this response from the team: Right click TheocBase.app and select Show Package Contents in context menu, then goto /Contents/Resources/templates
The translators may not pick this up, so I wouldn't wait for this.