Please see steps below on how to duplicate a set roster.
Click the ratio of one if the shifts of the roster you were wanting to duplicate -
Select All shifts (or the specific shift you would like to duplicate) -
Click duplicate shift (this will take you to the multi-booking screen) -
Click re-occurrence - duplicate shift
If you do not want any members in the shift, untick the 'Keep Member in the shift(s)' button if you do not want members attached to the shifts.
Hit confirm
This will then show all the shifts attached to the original ratio -
Can then continue to confirm the shifts as normal.