How ImagePress limits work
By default, ImagePress uploads are unlimited. If you need to restrict the number of images your members can upload, you can use the limits and quotas feature.
There are two ways to set upload limits:
1. Globally for all users.
See screenshot and details below.
2. Individually, per user.
If you want to micromanage your users, head over to their profile page, in your WordPress dashboard, and look for the ImagePress Details section and adjust the User upload limit value.
If the quota has been reached, the upload form becomes inaccessible, and a notification is shown.
In the screenshot above, note the “Increase/decrease/set users quota” option, where you can perform these actions in bulk.