Disabling

All Decals in a Mission

To turn decal application off, add the following line to init.sqf accordingly:

RHSDecalsOff = true;

Specific Vehicle Decals

To disable decals or only the symbols/numbers on a specific vehicle the following should be placed in the init field of a unit or init.sqf of a mission.

//Disable all vehicle decals
this setVariable ["RHS_Decal_Enabled", false, true];  

// Disable vehicle symbol decals
this setVariable ["RHS_Decal_Symbol_Enabled", false, true];  

// Disable vehicle number decals
this setVariable ["RHS_Decal_Number_Enabled", false, true];  

Important: setVariable must be set to public