He explained that the Chemical Coordinator was sick today, and that he was the designee. But there was no evidence to support this, other than him saying it.
Example: Product certs may be signed by AsstDirector or designee. Document of corporate structure details that anyone above any position may act as being in that position...so the Director, VP, Pres are already allowed to sign too. But the Asst Director decides that Joe Smith can sign Certs coming out of one specific group, but not all certs. AsstDirector also decides that he does not have the confidence in Joe's coworker Frank to let Frank sign.
We simply write a memo from AsstDirector to Joe Smith that Joe can sign Certs from that group and Joe keeps a copy and ISODOC Coordinator keeps a copy. On a day to day basis everyone is used to who can sign and who cant...and there is a piece of paper to back it up if needed. No document change, no dynamic list needing updating, just a note on file.
If specific training is needed to perform the task, said note might reference "if training is up to date" which would be supported by the evidence of training that you need to keep anyway.
That's how we do it, anyway...and it's pretty simple and functional with no findings yet.