Hi @jrc23, I hope you are doing well!
Unfortunately duration plays a role with availability as everything ties back to the booking page grid. Understandably, this is not ideal and can cause a lot of confusion, that’s why we are working on improving the availability settings this year - keep an eye out on our product update page for new releases!
To help with the 40 min vs. 30 min duration I would need to see your booking page and see what slots you have before 1 PM. You can send a DM so I can have a look!
It almost always goes back to how the grid increments are set - as is for the padding! The padding follows what is set under the grid increments and takes that as the minimum padding to select:
If you want back to back 30 minute interviews, you can set your increments to 10 or 15 minute slots, and the duration to 30 minutes. This way you can set up padding for 10 or 15 minutes.
I hope this makes sense! If you have any other questions, feel free to post them in the forum or reach out to our support team directly via the Help section in your YCBM account.
Have a great day!