Boolean Filter

This module consists of E2 Employee# list and 2 line items, one is to filter out the employee whose department needed to be changed. When I applied the filter and enable it all the unchecked line Items vanished. what I need is, when all is unchecked the list should appear and when one list member is checked it should filter out every other list member and only show the checked one. What are the ways I can achieve this? Help me with hints or suggestions.

Thanks in advance!

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