Commentary on Sections Part 1.Fines and Other Penalties: Enforcement Chapter 1: Collection of Fines Etc. Section 4: Additional powers where collection order made
This Section provides that when a court makes a collection order, it may also order the collection officer to make an application for deduction from benefits, or it may make an attachment of earnings order (Section 4(1)).  (These orders are described more fully at Sections 14-19 below.)
These deduction orders can only be made by the court when making a collection order where the offender has consented (Section 4(2)(b)) and the court will not make such orders or directions without first considering whether additional time to pay or payment by way of instalments would be appropriate (Section 4(2)(a)).