Dashboard access

When I try to open dashboard with my credentials I should see only my data. When someone tries to login he should see his data. But the reports are same. But the viewing of data is different. Inorder to use the privacy we are trying to implement in Arcadia. Can u please help me to solve this issue.
For example: Let us consider 1 report called “Portal”. Here everybody have access for that portal. But the issue here everybody should not see all of our data. He should see only his data.so my suggestion is when he login with his username or soeid the report should directly fetch his soeid while running the report “portal”.
Is it possible in arcadia…?