You can only board the train provided at least one passenger's status is confirmed/RAC. However, all passengers on the same ticket are allowed to travel, even if their status is showing waiting.

In the context of the Indian Railways (IRCTC) or similar booking systems, if one passenger on a single PNR (Passenger Name Record) is confirmed and another is on the Waiting List (WL), the status is generally treated as "partially confirmed." This allows the waitlisted passenger to board the train and travel, though they are not guaranteed a specific seat or berth. Usually, the two passengers are expected to share the one confirmed berth. However, there is a critical distinction: if all passengers on a PNR remain on the waiting list after the final chart is prepared, the ticket is automatically canceled and a refund is issued. But if even one person is confirmed or has a "Reservation Against Cancellation" (RAC) status, the ticket remains valid for all. This can lead to a cramped journey, but it ensures that families or groups traveling together are not separated by the system. It is always advisable to check the "Chart Prepared" status online before heading to the station, as many waitlisted tickets "clear" into RAC or confirmed status in the final four hours before the train's departure.