You can create triggesr from the create page. Choose minimum number of points. Events will be triggered as soon as the collaborator reaches the minimum number of points. Trigger for existing applicable collaborators upon saving (if published)? - if this field is checked, the events will be triggered for all the collaborators that have the minimum required points at the moment of saving the Trigger. If this field is not checked, the events will be triggered only for the collaborators that reach the minimum required number of points after the Trigger was saved.
You can reate events that will be triggered form the Event tab.