When you say enable Acceptance Criteria field on a Kanban board - do you mean on the issue detail view?
If yes, you need to be Board Admin and this is how from your board:
Note the information box at the top of the Board Settings page - if you're using the new issue view, you need to set it at either the issue or project level instead as it uses a consistent view across all areas.
Learn how to use two new reports for next-gen projects in Jira Cloud: Cumulative flow diagram and Sprint burndown chart. Ivan Teong, Product Manager, Jira Software, demos the Cumulative ...
Connect with like-minded Atlassian users at free events near you!Find an event
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no Community Events near you at the moment.Host an event
You're one step closer to meeting fellow Atlassian users at your local event. Learn more about Community Events