They are related.
The weight of the mercury provides an
Amount of hysteresis that is usually excessive.
The anticipator heater resistor allows you the reduce
the hysteresis to the desired value.
The anticipator provides negative hysteresis
if you want to think of it that way.
To the OP. Simply take a note or photo
of where the setting is now? then move
it and see what happens.
If it does the opposite of what you want
move it the other way.
M