Help button in default model dialog

src/gui/dialogs/default_model_dialog.py

@@ -2,6 +2,7 @@
 
 import tkinter
 
+from gui.dialogs.help_dialog import show_help
 from gui.icons import Icons
 
 
@@ -33,9 +34,24 @@ def __init__(self, parent: tkinter.Toplevel, icons: Icons) -> None:
             width=200,
         )
         ok_button.grid(row=2, column=1, sticky="W", padx=10, pady=10)
+
+        help_button = tkinter.Button(
+            self,
+            text="Help",
+            command=self.help,
+            compound="left",
+            image=self.icons.help_faq_icon,
+            width=200,
+        )
+        help_button.grid(row=2, column=2, sticky="W", padx=10, pady=10)
+
         # get the focus
         ok_button.focus_set()
 
     def ok(self) -> None:
         """Handle Ok button press."""
         self.destroy()
+
+    def help(self) -> None:
+        """Handle Help button press."""
+        show_help()