request assigning issue

request assigning issue

Hello;
I have 5 Sites and 5 Support Teams.  Each site is assigned to a team  like that. 

Site A >>> Team1
Site B>>> Team2
Site C >>> Team3
Site D >>> Team4
Site E >>> Team5

Each team member (technician) can see tickets created in the only his/her own site.

When a team member attempts to assign a ticket to a technician in another Team, other technician names are not listed in the drop-down menu; only other technicians in the same Team are listed in the menu. 

So the ticket can not be assigned to someone else in the another team.

How can I figure this problem out guys? I'll be really very appreciated if u can advise...

Regards
Tirelibirefe

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