If your schedule is the same all the time, you can create shift schedule, assign employee to these shifts, and then copy this schedule to the upcoming days/weeks.
Copy Mode
Schedule and employee assignment - if this mode is selected, the schedule will be copied with the same employees assigned to shifts
Schedule only - if this mode is selected, only the schedule will be copied. You will have to assign employees manually.
Employee assignment only - if this mode is selected, only employee assignment is going to be copied. In order for this mode to work, you must have previously have same shifts.