Jira issue integration configuration page is confusing
Problem
Jira issue integration available on all tiers allows for e.g. linking to Jira issues from within GitLab commits, MRs or branches. This functionality works regardless of which project key the user passes (as it uses a regex to detect any key that looks like PROJ-123
).
There are also additional features, available on Premium and Ultimate tiers, that can be set up on the same "configure Jira integration page" and require Jira project key to be passed.
It's easy to make the assumption that to make Jira issues integration work with GitLab, one needs to fill in the "Issues" section and can only use 1 Jira project key.
The main issue here is that we need to convey to users that the "Issues" section (on the configure Jira page) is an add-on / extra feature and not the basic integration. This is NOT needed for the general Jira integration.
How it looks like now
How to get to this page
In the project that you own, go to Settings -> Integrations -> Jira.