Get multiple values from a sharepoint list & Nintex Assing Task to these/this t value(s)

Hello Forum,

I have 2 colums in my sharepoint reference list;

USER_ID          Department

ut1ct                GT100

utx01              GT100

ut3cb              GT112

ut4ha              GT611

ut5gj               GT140

ut8mk            GT500

ut7df             GT500

utcba            GT500

so While my nintex WF is working then I have to get USER_IDs (1 or more) then assing TASK to these USER_ID

This means if Department=GT500 Then I have assing Task to USER_IDs ut8mk;ut7df;utcba

How can I realize?

Thanks's so much for your kind concern & support