Aston Martin DB11 Owner's Handbook Manual page 73

This CRAS anchors are located between the seat base and the
seat back. The position of the anchors is shown by two tags at the
base of each rear seat.
Remove the lower seat back panel (A).
The seat back trim panels are left and right handed.
Following the child seat manufacturer's instructions to secure the
child seat using the CRAS anchors (B).
3.27
Before Driving