Thank you so much. Had I finished the video, the error corrected itself. Here was the whole formula:
With({lclRecs:Filter(TimeTracker, Title=glbUser && StartsWith(ActivityDateTime, Text(Today(), "yyymmdd")))},
{
LogOn: LookUp(lclRecs, ActivityType="Log On", ActivityDate),
LeaveOut: LookUp(lclRecs, ActivityType="Leave Out", ActivityDate),
LeaveIn: LookUp(lclRecs, ActivityType="Leave In", ActivityDate),
LogOff: LookUp(lclRecs, ActivityType="Log Off", ActivityDate)
}
)