The following functionality would be great;

1. Allow resource booking straight from an issue (far more efficient than searching for a ticket within the resource view). Create a new button "Add booking" within the issue view that triggers the new booking window (with the correct issue already selected)
2. Add the option to select a start time and end time for the resource booking
   or
3. Integrate with a decent Redmine calendar like this one; https://github.com/berti92/mega_calendar .This would allow creating a booking by selecting a timeslot in the calendar. So the booking can have a scheduled time within a day.