Inserting New Fault Tree Levels
Fault trees typically consist of many different levels. To insert a new level in a tree, you can insert a gate either between two gates or between a gate and an event.
1. To insert a new level, do one of the following to open the Insert Gate window:
◦ Right-click the gate or event above which to insert the level and select Insert Level.
◦ Select the gate or event above which to insert the level and select either > or > .
2. Select the type of gate to insert and click OK to insert the gate for this new level.