Any optical practice intending to employ P-reg must ensure that there is at least one eligible supervisor in the same practice place to supervise on-site at all times. This applies to optical chain stores as well. Individual outlet intending to employ P-reg needs to provide an eligible supervisor from the same outlet.

For specialised cases, such as an ophthalmology clinic that could not provide an on-site supervisor, the P-reg will be allowed to engage an off-site supervisor. For such appointment, OOB's prior approval will be required.