The Usage page grid shows where this Contact Method is used.

Right mouse click to add or remove columns as required.

Column Name	Description
	Click the drilldown to take you to the Source.
Code	Where applicable, shows which Code from the named Admin Library.
Description	Where applicable, shows the description of the Code.
Source	Shows which Admin Library or Settings are using the Contact Method.
Use	Shows the Contact Method, and if the Source is Global Settings, the Object it is being used in.