Setting up users in Portal at the moment reqires the following steps in sequence:

Invite new email/login/user

configure reports visibility

accept the invitation in email

set password

If a login or multiple logins are created to assign reports visibiliity and without sending invitation, it is impossible to snd the invitation later and the previously created login has to be deleted and all access has to be configured again

Portal needs the functionality to send invitations to existing logins if necessary