Is there a way to allow the customer to have access to more issues than just the ones he created?
I.e. I want to have my customers to see all issues that were raised by a particular user group if they are members of said group as well.
Is there a hidden custom field that is used to determine what issues can be seen in the customer portal?
Unfortunately this is not possible. There is no hidden custom field that you can modify to do this. You're best bet is to keep track of JSD-270, and vote for it if you haven't already done so.
Developer, JIRA Service Desk
...be more productive while being fun to use at the same time. For some, getting started can be a bit intimidating. This is especially true if Jira Service Desk is your first exposure to Atlassian...
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