Limited Power Of Attorney - LPOA
See: Power of Attorney. But in this case it's limited. Like they can't just sign any and every document you'd care about. In LPOAs, usually the scope is spelled out on paper and filed away for hopefully-not-needed-in-the-future inspection. A typical LPOA might limit that attorney's powers to doing all of the paperwork needed to close the sale of 147 acres of swamp land. Or to "okay" the management of a portfolio of stocks for a set period of 3 years. Something like that, anyway...Limits. They don't just exist in calculus.