A search field is available on the top right corner of the "Service Plans" screen. You can search a service plan from the list on the basis of service plan name, service plan type (i.e. Individual or Enterprise), number of allowed signatures or service plan price.
For this:
Click the "Configurations" option from the left menu.
Click the "Service Plans" option. The "Service Plans" screen will appear.
Specify the related information in the search field and click .