How can I add custom fields to the composer?

[Don]

Hello

Form Templates can help to achieve it.

Introducing Experimental Form Templates

Hello, Discourse Meta Community! We are excited to introduce a new experimental feature, form templates. With it, you can enforce a structured form with data validation as part of the topic creation flow. [multiple_form_templates] Enabling the feature The feature is hidden behind a site-wide experimental flag. To enable it, just turn on the experimental_form_templates site setting under Admin ▸ Settings. Managing the templates The form templates can be created, edited, and deleted a…