Click the Visit Idaho Zoom background of your choice to view the image and then save it to your desktop by right clicking to “Save Image As…” or using the Ctrl(Command) + S shortcut.
In the Zoom app, click your profile in the top right corner, and click Settings.
On the menu to the left, click Virtual Background.
On the same Virtual Background Page, click the + icon next to Choose Virtual Background. A box will pop up allowing you to upload a photo from your computer. Click on the Visit Idaho background you downloaded, and it will appear alongside the other pictures as an option for you to choose from.