The phrase "authority for both" is correct and usable in written English.
It can be used when discussing a source of power or control that applies to two subjects or entities.
Example: "The committee has the authority for both the budget approval and project oversight."
Alternatives: "power for both" or "control for both".
Ratu Epeli Nailatikau, who became president on November 5th, had his nomination as vice-president rejected in 2007 by the Great Council of Chiefs, then the appointing authority for both posts.
Beginning soon after the English settled in Plymouth, the power struggle would eventually spawn a devastating conflict King Philip's War and draw the intervention of the crown, resulting in a dramatic loss of authority for both Indians and colonists by century's end.
National guidelines approved by the National Health authorities for both adjuvant and palliative treatment are produced in conjunction with these centres.
More recently, it said that Columbia Pictures Chairman Mark Canton and Dolgen had assumed new authority for running both Columbia and its sister studio, TriStar Pictures.
They looked to the Emperor as providing a fundamental and useful source of authority essential both for governing and for national survival.
Accordingly, this Guide Memo contains policies governing signature and financial approval authority for execution of both financial and non-financial agreements on behalf of the university.
New policy detailing the fiduciary responsibilities governing signature and financial approval authority for execution of both financial and non-financial agreements on behalf of the university.
Only Adam Lyth batted with any authority for 52, as both Jonny Bairstow and Gary Ballance got out to poor shots.
The prime authority both for Keats's life and for his poetical development is to be found in his letters.
The main objective of the reform was more efficient use of available health funding by creating larger units with state rather than county funding, and by making one and the same authority responsible for both treatment and transport.
This would result in simultaneous health authority approval for both the drug and the associated diagnostic test for patient selection [co-diagnostic or in vitro diagnostic (IVD)].
