Follow these steps to create a new documenttype:

1. Click Windows -> Documenttypes
2. Click "New" at the top of the list
3. Fill in the general data of the documenttype (Name, With, Height, etc)
4. Add all the necessary fields with the "Fields" tabpage
   also see: fields of a documenttype
5. Setup any other options you may need (Print options?, Auto-generate options?)
6. Click "Save and close"

The documenttype is now created and saved. If you click the "New file" button, the new documenttype should be displayed in the list with available documenttypes.