Can I customise the new create and link screen?

[Joe Pitt · Accepted solution]

If you mean the screen that shows the Create Issue option and the one that pops up when you link issues, not from JIRA. You would need to modify the source code to do that and that leaves you open to any changes Atlassian may make in the future to break your system.

[Frode Haugland]

That's the one. It answers my question.

[Michael Partyka]

https://confluence.atlassian.com/jira/defining-a-screen-185729487.html