uescase Selecting

[Marzi Goodarzian]

Hi

the user when issue creating must select a usecase, with select  any usecase should open a combo box and user must select a component.

How do this task?

Is this possible?

thanks 

[Nir Haimov]

Try to follow this:

https://confluence.atlassian.com/adminjiracloud/specifying-field-behavior-776636443.html

Under the "Making a field required or optional"