How to add an extra field to all categories?

Question

MODX

Added an additional field "keywords" in Elements>>Additional fields.
I need this field to appear in all categories. But you can only choose one. How to add to all?
I tried to create another one. field does not allow you to create with the same name. Is it really necessary to create fields with different names and assign them to each category? I have dozens of categories.

Answer 1

Set in settings Extras. fields - "Available for templates" . Select the templates in which you want to display this add. field. Categories, on the other hand, have a common output template, and if not, then select several templates.