You’re no longer limited to using the same logic between all of the conditions for a given criteria in the Process Builder. Just like with reports and workflow criteria, you can now customize the logic.
To customize the condition logic for a criteria node in a process, select Customize the filter logic .
In an opportunity process, you want to execute an action group if a high value deal is won. The criteria checks whether the opportunity stage is won. In addition, you want to check whether the opportunity is either greater than $1,000,000 or in an emerging market. You can use three criteria conditions and customize the condition logic to be 1 AND (2 OR 3).