A Template Id is a string that uniquely identifies a template.
This is needed when you want to reference a template from another template, to include its contents.
Template Ids must be unique within the database. If you create a duplicate Template Id, PhraseExpander displays a warning icon.
To assign/edit template Ids
1.Select the template
2.At the bottom of the Quick edit pane, select the Id textbox
3.Assign the Id (PhraseExpander will suggest a default one for you)
To display template Ids
1.Above the template list, click the Show column button 
2.Select Id

Enable the Id column to display Template Ids in the template list.
Finding all the templates that use the Id
1.Select the template with the Id you want to check
2.In Quick edit or the Template editor, click on the Find usage button

PhraseExpander will display a list of all the templates that use the GENDER template
Renaming Template Ids
When renaming an Id, PhraseExpander will check all the places where it's used and will update the references, so all the linked templates will continue to work.
NOTE: the Template Id can be up to 30 characters long and cannot contain spaces.