Our Help Guide addresses defining connection actions: /Documentation/manual/html/?defining_connection_actions.htm. Specifically it says: In the Send Parameters section, click Add to add a Send Parameter. Click in the Name column and give the parameter any name you like. The right-most column is the field or database column name. The middle column is the operator. You will usually leave it as = but you can change this if appropriate. Enter Like as an operator to allow wildcard searches in the connection actions.
For example if you want to search for “adams” you could enter”*ad*” as a search parameter.