New Users
If you haven't already done so, you need to create the users on your website who will use the private Board folder. To see what users have been created for your site, go to Site Setup -> Users and Groups Administration. From here you can or Show All to see a list of everyone
Do not confuse the member ROLE with a member of your organization. One is a role in Plone, the other is your relationship with the individual.
As you can see from the above example, each user has a User Name, Email and Role column. This is where you set the Global Role for a user. Global Role controls how that user can behave across the entire site. For your Board members, you should leave them in the member Role. If you want those individuals to also change or add content anywhere on the site, you can give them the manager Role.
When you're done adding new members and setting their role, you're ready to move onto the next step.