It is probably worth noting it is not unusual to have people who are not pilots move aircraft.

For example in the US FAA regulations only require a pilot during flight time. Flight time includes self-powered ground movement if it is for the purpose of flight. If it is self-powered ground movement for some other purpose no pilot is required.

Non-pilot mechanics often move aircraft. Their employers typically mandate specific training for this and only allow people who have had that training or are pilots to move planes.

Insurance companies also might impose restrictions, typically only allowing pilots or mechanics with plane moving training.