Dear @htuck, you were spot on one of the issues. I mean 33% of my calendar issue is resolved by you pointing in the right direction about default duration settings. The more I find problems, the more I have started to like openemr. Thank you so much.
Well the other important issue as mentioned before is the height of the timeslot. can we set it to a defined value for eg: 60px. Like the below image. This will help the appointment slot showing more information like in the picture.