By default, it's only possible to generate employment contracts and their appendices using document templates. However, that's far from the only capability!
In order to have a place to generate these documents, you first need to create a corresponding custom table. The fields that the document template will fill in depend on the fields defined in that table.
Note: To see the custom table in the list of available templates, one of the fields must be of the type File.
Further document generation from the template works exactly the same way as described in the guide "Generating Documents from Templates."