Put the description field on screen, and then add a "validator" that says "if feild X has value Y, then require field Z to be filled as well"
You'll need a plugin to provide the validator, there isn't one that will do it off-the-shelf, but I'd go for the script-runner plugin and write one in there
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 ...
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