How to set natural account segment value for non-recoverable portion for different tax codes

Oracle Fusion

We have a requirement that normally the natural account segment value for the non-recoverable portion of tax for a Payables invoice should default to the same natural account segment value as the expense line item, however for certain tax codes it should be overwritten with another value hence we need to update the SLA rules for non-recoverable tax.

looking at options we can see Tax Recovery rate Name but are not sure what value set that is aligned with.?

Else there is also an option recoverable tax indicator,?

Basically ideally it would be if tax recovery rate name = value A then natural account segment value for non recoverable line = B (else default)