For example, you could create a new field that looks up a related incident using the single search lookup on "Call". You can display data from that call by Deep Linking.
In this example, a Business Continuity Plan has been activated (a Request with workflow) and the triggering Incident has been linked in to it, along with all of the incident's relevant details. The section is collapsable, so that it can be minimised when the data is no longer needed to be front and center on the screen. These data can be used to control and direct the workflow.