We need to implement a filter, value of which will depend on usergroup. It is to implement row based security.
Scenarios are :
1) If user belongs to group 1 only item visible is item 1
2) If user belongs to group 2 only item visible is item 2
3) If user belongs to group 3 only item visible is all items.
Please check the below mentioned links.
Restrict Data Access with User Filters and Row Level Security
Tableau - User Filter at Row Level - The Data School
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