Are you looking to get leads to click on at least one email from three to transition to the next stream?
Then the below should help.
Use All for your filters:
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Member of Program X
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in Stream X
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clicks email is any
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minumum of 1 click
The above should only affect members of your program who have clicked at least one link in any email and is a member of stream x, then in your flow transition to the next stream.