Install the app from the Atlassian Marketplace
Setting up the app:
After the app is installed, you also need to add the custom field “Team Versions” to your Jira Issues fields. You follow these instructions:
Add a custom field
Select [Site Settings] > Issues.
Under FIELDS, select Custom fields.
Find “Team Versions”, then […] and select “Associate to Screens”
Select all screens and save (to get the field on all projects)
Creating your first version:
visit the version manager.
click the “Add version” button.
Now the version is available to add to your issues.
Initial screen
The first time the app is open, there are no versions available, and the app shows an empty message.