This audit schedule is one from an implementation project. In it, you can see where I and M are supervised to help bring new auditors up to speed .
The scope of the audits was the entire department against all relevant documentation. Understand that the purpose for these internal audits was in large part to drive ISO 9001:1994 implementation in the company.
You might also have noticed that this schedule is one based upon departments of the company. This is one way to do it. This schedule was used in conjunction with a responsibilities matrix (see next slide).
Internal Audit Schedule Example
ISO 19011 - Quality and Environmental Management Systems Auditing Forum Discussions