These are the mounts where the suspension arms attach to the chassis and are known by various names depending on the manufacturer, such as:
Front arms, mount at front of arm
Front arms, mount at rear of arm
Rear arms, mount at front of arm
Rear arms, mount at rear of arm
Different cars allow different adjustments to these mounts, but these are the possibilities:
A/B or FF/RF
C/D or RF/RR