Do we have a way to add pre-codition to the zephyr create test screen

[Madhavi Varanasi]

I want to add a precondition field to my zephyr test case, please help me if i can find a way to add the customized filed in to the test case screen

i went through this

 https://community.atlassian.com/t5/Jira-questions/Is-it-possible-to-add-fields-to-the-Zephyr-quot-Test-Execution/qaq-p/16516 

link and it is still not clear on how to add customized filed to the test case screen