If you have multiple Visit Schedules for a Site, you may for an example want to allocate an Employee only to the Pastrano Enterprises Friday Clean Visit Schedule
In this case you'd select the specific Visit Schedule
Then allocate the New Employee.
Keep in mind: If you are REPLACING a current employee with another you want to Tick the Option to Remove already allocated Staff. If you are ADDING another Employee to that Visit Schedule, then leave it unTicked, and freshOps will add both cleaners to the Visit Schedule.