MOD 1 – TOGGLE AUTO SPOT: TAP the SPOT button to toggle automatic spotting of targets. You will want to use the Master Quick Control in the in-game menu.
MOD 2 – ADS AUTO SPOT: WHILE AIMING DOWN SIGHTS, you will automatically spot targets.
MOD 3 – FIRE AUTO SPOT: WHILE FIRING, you will automatically spot targets.
MOD 4 – ADS/FIRE AUTO SPOT: WHILE AIMING DOWN SIGHTS OR FIRING, you will automatically spot targets.
CLASS 4 – REFERENCE TABLE
Master Quick Control: WHILE HOLDING TOUCHPAD / VIEW, TAP OR to SUSPEND / RESUME THE ENTIRE PACK.
(Suspended: Heavy Rumble / Resumed: Light Rumble).
CLASS 4 Suspend / Resume: If a MOD within CLASS 4 is Enabled, WHILE HOLDING TOUCHPAD / VIEW, TAP R1 / RB to SUSPEND / RESUME CLASS 4 MOD. (Suspended: Heavy Rumble / Resumed: Light Rumble).
CLASS 4 MOD
INFORMATION
0: MOD Disabled
OFF.
1: Toggle Auto Spot
TAP the SPOT button to toggle automatic spotting of targets. You will want to use the Master Quick Control in the in-game menu.
2: ADS Auto Spot
WHILE AIMING DOWN SIGHTS, you will automatically spot targets.
3: Fire Auto Spot
WHILE FIRING, you will automatically spot targets.
3: ADS/Fire Auto Spot
WHILE AIMING DOWN SIGHTS OR FIRING, you will automatically spot targets.
OR 
to SUSPEND / RESUME THE ENTIRE PACK.