One thing ALL my clients always complain about is the inability to book multiple appointments in one go. They complain that every other software has this feature, and it seems like a surprisingly big feature that high-level is completely missing.
For example one of my clients does Reflexology, and they have clients who like to book 3-4 appointments ahead of time. With the current state of the software they have to book (pay the deposit), then book another appointment (pay the deposit again), and so forth for as far ahead of time as they would like. It would be a huge problem solver if they could just book multiple appointments (different days/services that meet their needs) in one go.
Thanks!