Refer to figures.
Solving from Heading (HDG) and GroundSpeed (GS), knowing WV, TAS and required track.

Tharby to Buckland sector:

1. Set wind direction to 120° under the "TRUE HEADING" index at the top.
2. Set the center point on the True Airspeed (TAS) of 100 kt.
3. Mark the wind velocity 10 kt down from the centre point.
4. Initially, set the True Track to 224° under the "TRUE HEADING" index.
5. Note that this heading would result in 5°R drift and a track of 229°.
6. Reduce the heading value under the index until the heading plus the drift gives a track of 224°. This occurs at a heading of 219° with 5°R drift.
7. The groundspeed for this track is approximately 102 kt.

Buckland to Cotby sector:

1. Set wind direction to 120° under the "TRUE HEADING" index at the top.
2. Set the center point on the True Airspeed (TAS) of 100 kt.
3. Mark the wind velocity 10 kt down from the centre point.
4. Initially, set the True Track to 003° under the "TRUE HEADING" index.
5. Note that this heading would result in 5°L drift and a track of 358°.
6. Reduce the heading value under the index until the heading minus the drift gives a track of 003°. This occurs at a heading of 008° with 5°L drift.
7. The groundspeed for this track is approximately 104 kt.