There are two types of logic for multiple filter or path rules: AND and OR.
AND logic
To identify objects that meet all criteria within a set of filter or path rules, use AND logic. For example, if you want to identify new emails containing the words 'Help' AND 'Urgent' in the subject, click AND before adding the second rule.
OR logic
To identify objects that meet at least one criteria within a set of filter or path rules, use OR logic. For example, if you want to identify new emails containing the words 'Help' OR 'Urgent' in the subject, click OR before adding the second rule.