Just started using a Mac AND CheckBook Pro!

Now my question....
Is it possible to sort on multiple columns? I would like to sort by Date followed by Amount. I want to see if I have multiple entries for the same amount on the same day.
Some times when I import my bank statement and have duplicates, I want them to stand out. Example: Right now on the "pre-import" screen I have to check and make sure that each entry has not already been added to register. If I miss something and don't un-check an item to be imported and it becomes a duplicate, I want to be able to sort on date/amount and make sure there aren't duplicates. This would usually happen when my register dates and my import dates overlap.
Suggestions?