Prior Period Enviornment

Need advise on creating 2nd prior period environment.

Client came up with query to have separate prior period environment for their payrole team. They already have one prior period environment which is currently being used by both finance and payroll staff but due to the risk payroll staff may accidently update data they want separate prior period environment.

Can we create another prior period environment? any other option other than creating new prior period environment?

If we need to create prior period environment then what would be high level steps considering this is 2nd prior period environment.