Legacy VMS staff administrator onboarding

For GiveCampus accounts and administrator access.

For the legacy VMS staff-administrator flow, an authorized VMS superadmin adds the intended staff email under Administrators; it links an existing user with that email. This legacy onboarding flow does not send an invitation. If that email has no account, the staff member should create and confirm a GiveCampus account using exactly the administrator email, then sign in; confirmation links pending administrator records by email. Use the institution SSO path where configured and ask support to reconcile an existing volunteer identity under a different email rather than deleting it. The consolidated fundraising administrator invitation flow is different. To explain why this specific person still lacks access, support must check the saved administrator email, linked user, confirmation/SSO and school/product role.