under the supervision of

"under the supervision of", in relation to pest control operations carried out by a licensed assistant pesticide applicator, means acting under the instruction and control of a licensed pesticide applicator who is available if and when needed, even though the licensed pesticide applicator is not physically present at the time and place the pest control operations are carried out;
PU(A) 70/2004 - PESTICIDES (PEST CONTROL OPERATOR) RULES 2004
2. Interpretation.

under the supervision of

"under the supervision of", in relation to pest control operations carried out by a licensed assistant pesticide applicator, means acting under the instruction and control of a licensed pesticide applicator who is available if and when needed, even though the licensed pesticide applicator is not physically present at the time and place the pest control operations are carried out;
PU(A) 070/2004 - PESTICIDES (PEST CONTROL OPERATOR) RULES 2004
2. Interpretation.