How can I bring up the sub task show on the active splits board?

[Tapanee (Nuei) Juangpanich]

I'm not sure how to make my sub-tasks visible on the active sprint board. Can you guide me through the process?

[Linh Pham_Ricksoft_Inc]

Hi @Tapanee (Nuei) Juangpanich and welcome to the community!

Are you using Jira Software or Jira Work Management? 

If you're working with sprint, I assume it's a software project and not business project. So the subtasks should be visible in your active board as well as in the backlog.