The select tModel control is loaded when you need to provide a tModel key to a control in another publish or search context.
Load the Select tModel Key page. This is usually done by clicking the Select tModel Key button in a master page.
In the tModel name edit box, enter all or part of the name. You can use the "%" wildcard at the start and end of the search string. For example "%Customer%" will return "AddCustomer", "AddCustomerSoapBinding", "CustomerNotification" and "CustomerNotificationBinding".
Click the Find button at the bottom right corner of the page.
As when searching for a tModel, the find algorithm can also be constrained using categories and identifiers.
The search result will appear on the Results pane. Click on Select tModel Key icon - the first one on the left. This will load the tModel Key into the control on the originating page.