To systematize my many years of practice, I summarized what and how I do in companies. This is the OPS methodology. Observe (watch and ask), Measure, Simulate.

A - observe (see and ask) - understand how the employee works, observe him,

P - measure - determine in what order and what the employee is doing, measure the working time

S - simulate - simulate an employee's job change. best in a digital world with no consequences for production and employee