The Members page of a Workspace lets you remove members and invite additional members to this Workspace:
to remove the selected members from this Workspace.
As a side-effect, the selected members are also removed from any Workspace to which they had access only as members of this Workspace.
All other Workspaces, your Address Book and the Address Books of other registered users that may include the selected user names are not affected by this action.
to bring up the 'Add members to Workspace name' form. It lets you specify additional users of the BSCW server that are to be granted access to this Workspace.
The Add members to ...' form lets you:
If you have selected or entered only valid names of registered users and BSCW groups -- or email addresses that BSCW has associated with registered users -- you need not bother about a personal addendum to the invitation email: no such email will be sent. Registered users or BSCW groups will simply become members of the Workspace as soon as you click
If you have selected or entered email addresses that BSCW has not yet associated with registered users, BSCW will automatically send an email to these email addresses. This email, which has your user name in the 'From:' field, is an invitation to register as a user of the BSCW server. You may select the language of this email and you may enter a personal addendum to the standard text, that will be sent to all invitees.
to actually grant the new members access to the Workspace or to mail out the invitations.