A dynamic access server engine on a server may be configured to receive a request for access to a restricted area during a specific time period. If there is no scheduling conflict the engine can schedule the access period. Additionally, the request may be associated with one or more invitees. For each invitee, the engine determines whether the invitee is authorized to temporarily access the restricted area. If authorized, the engine automatically grants to the invitee temporary access to the restricted area during the scheduled period.