To delete specific gate in the event tree, select the gate, right-click on it, choose “Delete” from the popup menu. The gate and all its outcomes will be deleted.

To delete specific sequence in the event tree without deleting the gate, select the gate, right-click on it, choose “Clear sequence” from the popup menu. The gate will not be deleted but all its outcomes will be deleted.

To delete the whole event you should first remove all gates from it. Then click on the event rectangle, right-click on it, choose “Delete” from the popup menu. The event will be deleted.