By default, Selectors will use AND between filters to find those who meet ALL of the criteria.
i.e. In the screen shot below we are finding Accounts that have an Open Opportunity AND they have People who have Engagement Minutes (3 mo.)>1

You can change the logic to use OR instead to match those who meet the criteria for ANY filter by clicking Edit Logic and selecting "OR."
i.e. 1 or 2 or 3

For advanced use cases, you can edit the logic to use a combination of “AND” and “OR”. A combination of "AND" and "OR" logic requires parentheses for you to get your desired output.
i.e. (1 and 2) or 3