How security rules apply when using Ledger Set?

Hello,

We are currently implementing Ledger Set and I wonder how to apply security rules.

The 2 ledgers included in Ledger Sets have their own authorised values for some segments of the KFF.

By creating security rules and by applying them to responsibilities, it is possible to restrict list of values for each ledger, when a single ledger is assigned to responsibility.

But how to apply those rules when using Ledger sets, since the responsibility applies to the 4 ledgers?

Thanks in advance

Regards