Time Base ignored

When we used Appointments+, we used a 30 minute Time Base. And appointments were always set to 90 minutes. When people went to a day that had no bookings yet, they saw 8:00am, 8:30am, 9:00am, all the way to the end of the day of 6pm. That meant the user can choose 8:30 am, and it would automatically block of 8:30-10am, and also the 8am block. https://www.screencast.com/t/2MO45GLW0 But on our new version with WP Base, it only show sets specific appointment times that people can choose based on the start time and end time, and the 90 minutes like this https://www.screencast.com/t/9uY7sNohUXF That means our customers loose flexibility in choosing. Is there a way for me to edit this? I’ve been looking online and can’t figure it out.