You can define three different levels of detail for displaying the nodes of your diagram: high, medium, and low. To do so, you need to create the corresponding rules and assign a different symbol to each rule.

If you do not have the Network example open, open it by choosing File>Open and browsing to the network2.idpr file.

For each of these rules, click the triangles in front of the parameters name, criticalAlarms, majorAlarms, and minorAlarms so that they point upwards. By doing so, the level of detail rules will inherit the value of these parameters in the rules in which they have been defined.

The symbols NetworkDeviceSmall and NetworkDeviceTiny are simplified versions of the NetworkDevice symbol. They have the same parameters as the NetworkDevice symbol but are displayed with less detail.

The third level of detail, high, is the default detail level at which the nodes are displayed and, as such, does not need to be defined with a rule.

With these rules defined, use the View>Level of detail menu items to display the diagram in different levels of detail, or click the corresponding rules in the Style Rules tree.