Potentiometer schematic symbol help
Trimpots especially multi-turn pots are often numbered with pin 1 being the CCW position and 3 for CW.

Since it is not marked (as one would hope) on the schematic, you may hope what see is the minimum position is pin 1 (CCW).

This "standard" was started by Bourns and but it's hard to say if it is still universal.