The plugin provides support for protection plugin, so you can decide who can view the containers in your area.
If your desired protection plugin is not listed here, feel free to create a new issue.
Add CONTAINER_VIEW_PROTECTION to the protection.flags section in the language file of Bentobox:
protection:
command-is-banned: Command is banned for visitors
flags:
CONTAINER_VIEW_PROTECTION:
description: '&a Toggle who can view container.'
name: '&a Container View'