When you add a Professional Advisor or sub-account, you have the ability to adjust the privacy settings for that specific relationship. You can control whether you want that person to only be able to “view” your account, or actively “manage” your account. Settings can be adjusted at the enterprise, farm, and field level.
It’s your farm and your data, so FBNSM puts you in complete control. If you'd like to add an advisor to your account, contact firstname.lastname@example.org.