After you have your workspace created, and your lots cataloged its time to start work on the actual appraisal document.
To start this navigate to Current Appraisal > Documents > Document List.
Once on this page click the "+" on the top right of the page. This will start a new document.
Now enter in a name, and select the template you would like to use and click save.
Now your template should be ready to fill in.
Your document will also be available on the Current Appraisal > Documents > Document List page, and you can just click on it there.