Writing or Creating tests in Zephyr for JIRA Cloud is easy, intuitive and available from almost everywhere.
You can also modify existing tests. Since tests are really JIRA issues of issue-type "test", you can clone, search, export, print, bulk modify, link, label, share, vote, or comment on them, just like you would with any other issue.
Tests are written for a JIRA project. They can be further organized and grouped by Versions, Components and Labels that have been set up for that project. A test can belong to one or more of these. The Test Summary tab shows this grouping for a project. These tests can also be searched using the "Issue Navigator" and bulk changes can be made on them.