Adding a password to your slideshow
Adding a password to your slideshow will make it private. Only those with the password will be able to view the slideshow. There are two ways to do this:
1. During initial slideshow setup
When you begin a new project, you can add a password for your slideshow in the Advanced section:
2. While editing your slideshow
Click on the Gear icon next to your slideshow's project name at the top of the page as you are editing your slideshow: