// ... assume you have TrackEvent objects assigned to variables event2 - event4



// get the collection of all groups

var allGroups : TrackEventGroups = Vegas.Project.Groups;



// get the first TrackEventGroup

var g1 = allGroups[0];



// get the first event in the group

var event1 = g1[0];



// add an event to the group

g1.Add(event2);



// remove an event from a group

g1.Remove(event2);



// create a new group

var g2 : TrackEventGroup = new TrackEventGroup();

Vegas.Project.Groups.Add(g2);



// add events to new group (do so only after adding group to the project's Groups)

g2.Add(event3);

g2.Add(event4);



// clear (and remove) an entire group

Vegas.Project.Groups.Remove(g2);



// determine if an event is grouped

if (event3.IsGrouped)

  print("event3 is a member of a group");



// get an event's group

var event1Group : TrackEventGroup = event1.Group;