Delete Owner and transfer to existing collaborator/owner

Hi Kirstin, 

Welcome to Box Community and glad to assist! 

The folder owner can transfer the folder ownership before he/she leaves. 

To transfer the folder ownership:

• Log in to the Box website and locate the appropriate folder. 

• Click the folder and find the collaborator whose access level you would like to modify. 

• Under the Permissions column, click the user's access level to modify it. Select the appropriate access level from the dropdown that appears. If the access level is greyed out, you may not have the necessary permissions to modify that user's access level. Note: Collaborators in single files can only be granted the Editor and Viewer access levels.

If you are the owner of a folder, you can transfer folder ownership to a collaborator at any time. Simply follow the instructions above, and select Owner from the access level dropdown (this option is only visible to folder owners). The collaborator you designate will be the new "Owner" of the folder and your access level will be downgraded to "Editor". The contents of the folder will no longer count against your account's storage allowance.

For more details, you can visit this article. 

Thanks for posting!