How do I limit the visibility of incidents on a particlular business service to a specific group

[June Unwin]

I am onboarding a new team and their requirements are for all their incidents to be visible only to their team and nobody else.  I have set up routing based on business service to their team, but am not sure how to achieve the security aspect of this.  I've not used a Before query business rule and no clue on scripting so all help would be gratefully accepted.

[June Unwin]

HI Ankar,  I've looked at lots of articles and tried various things - this one looked like it might work but stopped everybody else seeing all the other incidents.  Not quite sure how to approach it really.

[Snow Learners]

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[June Unwin]

OK - so I've tried various things and  decided to use the assignment group to limit access so that it can be viewbale by other teams if it gets reassigned to another. However, I have managed to stop everyone apart from the assignment group member from seeing the incident - but then the caller cannot see it either.  Any ideas what I should do to the query to allow callers to see it?

this is what I have so far:-