Zoom will be updating your Marketplace Pre-Approval setting for publicly listed apps to allow users to freely add apps without admin approval as the new default on April 18, 2022.

If you would like to keep your current setting of requiring admin approval for adding apps, you can go to Marketplace. Only one admin for your account needs to take action if you prefer to keep your setting on.
Confirm Setting
For more information on this setting, please check out the help article.