I found this thread because I have the same question: I use Square only occaisionally for my sales at events, and it would be beneficial to delay deposit just a day or 2 so I can keep all the sales for that event together. Is this not possible at all?

you can call them and remove the card and checking account on file and the money just builds up in your square account.   However, you have to have your account verified again before they start deposits.