One checkpoint with checkin multiple times is interesting challenge, especially in reliability rallies. Typically the route layout is such that competitors converge on same checkpoint after each loop and this causes confusion for competing crews. In such situation the same checkpoint can be, say, Time Control 05, Time Control 07 etc. Virtual Marshal is able to provide possibilities of having such time controls.
Competitors are given time stamp based on the time of arrival relative to start time. As an example Time Check 05 and Time Check 07 are likely to be reached within 15 minutes and 40 minutes respectively from the start. Then organisers can set Time Check 05 to be active only up to, say, 30 minutes and Time Check 07 up to 55 minutes.
Thus if competitor arrives at a checkpoint before