By using a combination of Thinkific features, it's quite easy to create a completely branded and private copy of any of your courses for a particular client.
The first step is to duplicate your course. This allows you to copy all course contents into a new course with one click.
Then you can use our Private & Hidden course features (Business Plan and above) to make sure that course is only available to your intended audience.
Finally, you can customize the landing page of this new course. This can be done using the Design & Details section (when you are editing the course). Also, if you want to work directly with the HTML / CSS you can use our Themes feature.
Even when I have "Private" courses, if I put them in a free bundle, it makes the courses that were private free as well. How can I make a bundle itself private without hiding it?
Currently we don't have a way to set a bundle as private. You can definitely send this request to our product team through this link: https://portal.prodpad.com/18563
In the meantime, what you can do instead is create an additional page that lists all the courses that you want grouped together. In this way, students won't be able to sign up for it but can still see all the courses on one page.
Hope this helps!