Work order assignment

When we allocating resources to a work order, system is not checking actual available hours.

For a resource, available hours is 11 hours. We allocated one work order for a particular day 3 hours, so that remaining available hours is 8 hours.

Again we allocate one order starting with that specific date for 40 hours by distributing the hours, system is allocating 11 hours again for that particular date, so that available hours going negative which is not realistic. It has to allocate only 8 hours for this particular day and remaining 32 hours should be distributed to next working days.

Please help how we can solve this.