added extra step

src/fiber_package/signup/answer/types.py

@@ -3,8 +3,9 @@ from typing import Annotated
 from pydantic import Field
 
 from .answer_open_questions import AnswerOpenQuestions
+from .answer_checkmarks import AnswerCheckmarks
 
 AnswerUnion = Annotated[
-    AnswerOpenQuestions,
+    AnswerOpenQuestions, AnswerCheckmarks
     Field(discriminator="category")
 ]

src/fiber_package/signup/howto-add-new-question.txt

@@ -4,9 +4,10 @@ In order to add a new question type you need to:
 2) add it to the list of question tags
 3) Create the FormXXX in element
 4) Create the AnswerXXX in answer
-5) Add it to the question union type in answer.types
+5) Add it to the answer union type in answer.types
+6) Add it to the question union type in element.types 
 Tip: run ./pre-commit to run the typechecker to see if you got your imports right!
-6) Add it to fiber-django
+7) Add it to fiber-django
     6a) Add it to the process_question function event/util.py
     6b) Add it to core/templates/form 
     6c) Add it to the form page (currently dlfsite/templates/testing/form.html)