If you wish to assign a new Carer to the Schedule, which differs from the original Carer assigned to the Schedule this can be done from the Carer Assignment screen on the Scheduling Wizard. When you opt the replace the current Carer with a new Carer, you will have the option of assigning the new Carer and applying the original Carers Assignment Pattern to the new Carer.
Alternatively the facility to create a new Assignment Pattern for the Carer is also available.