Remove edit capabilities

Hi Arthur, 

Welcome to the Box Community!

The only way to restrict edit actions that collaborators can take into a content that you own is to lower their "Collaborator" access to a folder you own.

This could be any of the following:

• Previewer Uploader,
• Viewer,
• Previewer

To further understand the different permissions that accompany each of these Collaborator access level, please take a look at this article: 

• https://support.box.com/hc/en-us/articles/360044196413-Understanding-Collaborator-Permission-Levels

Thanks for your question and I hope this information helps!

Best,