Once a new junction object is created, Master-Detail relationships need to be defined between this junction object and Opportunity and ZIssue (Jira).
First, we define a Master-Detail relationship with Opportunity.
- Field-level security with this field must be defined for Profiles that will need to access these relationships
- Field should be included in selected Page Layouts
Custom Related Lists for ZIssue (Jira Issue) need to be included in the selected Page Layouts.