If you're an admin and wish to change protections for your entire team, head over to the administrator portal. Protections can only be managed at an administrator level.
Within your Browser Firewall, if the protection is greyed out, this indicates it is not active and not available for use. If the protection is not greyed out, it is enforced by your administrator.
In the administrator portal, you can toggle the Browser Firewall protections on or off as your team needs:
You can also toggle the Inbox Defender on and off in the Admin Portal as required: