To make your quizzes private with a premium subscription, follow these steps:

• Login to your Sifu Account

• Go to the "Challenges" section on the left side of the screen

• Click on "Add New Challenge"

• Fill in the required details and click "Add Challenge"

• Click on "Publish" to publish your Challenges

• Next, choose between "Public" and "Private"

• Select "Private" to make your quiz private.

Your quizzes will become private and only visible to the students you share your Dojo Link with.