As Leech and Bert77 said above. TMS Up to enter track mode (POINT track if possible or AREA track if no POINT trackable target exists under the cursors), which will ground-stabilise and effectively slow down the cursor. TMS Right goes directly to AREA track if you don’t have a target already in the vicinity of your crosshairs.
Have another look at the Sniper chapter (1.9) in the TO-BMS1F-16CM-34-1-1 Manual for all the detail and options for using the TGP.