Hey there Hwi,
for this case you must involve an issue screen in this transition.
Go under administration - issues - screens and create a new one for this transition - set your wanted fields in this screen.
After you created the screen you can go in the workflow section - your workflow and edit the affected transition.
There you should have an edit button on the right top - there you can set the screen for this transition.
When you want the fields on the transition to be required you have to set a validator on this transition as well.
If your standard JIRA doesn't have a suiting validator you have to install some workflow plugin - if I remind right misc workflow got the feature to check fields.
PS - don't search long for the field comment on the screen.
Comment is always on a screen even if you don't set fields on it.
I’m a designer on the Jira team. For a long time, I’ve fielded questions from other designers about how they should be using Jira Software with their design team. I’ve also heard feedback from other ...
Connect with like-minded Atlassian users at free events near you!Find a group
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no AUG chapters near you at the moment.Start an AUG
You're one step closer to meeting fellow Atlassian users at your local meet up. Learn more about AUGs