After creating a number of test cases in Squish, you might notice that they all have some basic structure in common. For instance, they might all have some startup code in their main test script. To avoid that you have to copy and paste that common code whenever you create a new testcase, you can use test case templates.
To create a new test case template, you first need to decide which existing test case shall serve as a template. To do so, choose any test case item in your tree of test suites at the left hand side of the Squish IDE, right click on it to open the context menu, then click on the menu item labeled Use As Testcase Template.
A small dialog will pop up, asking you for a name for the template - choose something descriptive here, then press the OK button. In case you already have a test case template with the chosen name, the dialog will tell you so and ask you again.
To use your test case template instead of starting a new test case from scratch, simply select | from the menu bar (or choose the menu item with the same name from the context menu of test suite items).
Assuming you have defined any test case templates before (if you haven't, a message box will tell you so), a little dialog will become visible, asking you to select one of the available templates for the creation of the new test case. Select the template you want to use, then press the OK button.
A new test case item will be added to the currently active test suite, and you have to enter a name for the new test case. Press Enter after entering a name for the test case to finish the creation.