Understood. There are some areas where times can be adjusted (see the Adjust Rankings and Time Shift buttons on the Players tab). While I want the application to be as flexible as is necessary, adjusting times directly can have unintended consequences, so the ability to be flexible, the attempt to be easy to use, and the protection to prevent the user from hosing things up irreparably are always at odds with each other.
That said, the only times you can't really adjust directly are for the buy-in, and for add-ons and rebuys. However, you can insert and delete add-ons and rebuys so they get into the correct sequence, which is what is usually most important. Are you needing more fine-tuned control over times for add-ons and rebuys missed or is there something else?