【原创】实验室关键岗位代理人指定-----翻译求助！

I, the laboratory manager of ABC Testing Centre,hereby authorize the following critical deputies to take charge of the authorities and responsibilitiesof the corresponding positions.

应该有个状语从句吧。whenever...,in case...,毕竟是代理职务。

I, the laboratory manager of ABC Testing Centre, hereby authorize the following critical deputies to take charge of the authorities and responsibilities of the corresponding positions in the absence of the original person in charge.

哪就这样啦

I, the Laboratory Manager of ABC Testing Centre, hereby appoint the following staff as deputies of the key personnel listed below. The Deputy acts with full authority and responsibility in the key personnel’s absence.

Key personnel Deputy
Ms. AAA (Quality Manager) Mr. BBB
Mr. CCC (Chief Internal Auditor) Miss DDD
= = = = = =
Information :
The words key, appoint : refer to ISO 17025 (Clause 4.1.5 j)
The sentence “The Deputy acts with full authority in the key personnel’s absence”, copied from http://www.universityofcalifornia.edu/news/compensation/alivisatos0108.pdf

态度认真，学习了！

讨论一下吧，下面是剑桥在线字典的解释：
appointment noun ( JOB )
/əˈpɔɪnt.mənt/ n
[C or U] when someone is officially chosen for a job, or the job itself

按照ISO17025的原文是要appoint，应该翻译为委任（委托一个任务），但是CNAS CL01的翻译是「指定」，但是在实际操作上，CNAS的要求是「授权」。在中文环境中，「委任、「指定」和授权三者的分别是甚么？