Hi Ana, 

Welcome to the Box Community!

Yes, this is possible. When inviting a person as a collaborator within a folder, you have the ability to set the level of access that person has to your content.

If you only want your collaborators to upload to your folder, you may invite them as "Uploader" into that folder, this permission allows them to upload to the folder you shared but they will not see files uploaded by others.

You can learn more about Inviting collaborators and different Box permissions you can assign in these articles:

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


• https://support.box.com/hc/en-us/articles/360043696854-Inviting-Collaborators

Thanks for your participation in the Community!

Best,