The phrase "authorities to modify" is correct and usable in written English.
It can be used in contexts where permission or power is granted to authorities to make changes or adjustments to something.
Example: "The new regulations grant authorities to modify existing laws as necessary to ensure public safety."
Alternatives: "powers to amend" or "permission to alter".
These findings led a number of health authorities to modify the official recommendations regarding the use of influenza vaccine in healthy children.
Never forgetting the commercial side, however, Embraer says it is in discussion with the Chinese authorities to modify its current production facility in that country, initially dedicated to building the ERJ regional jet.
Developmental biologist Kathy Niakan has received permission from U.K. authorities to modify human embryos using the CRISPR/Cas9 gene-editing technology.
The co-management proposed for protected areas in Senegal is a first in the Sahel region, and the success of the experiment will allow the authorities to modify laws and regulations governing the management of these areas.
Dissecting the letter, Mr. Kerry said the authors were wrong when they said that Congress had the authority to modify the terms of an agreement negotiated by the president.
But the mediation board chairwoman, Elizabeth Dougherty, wrote a dissent questioning the board's authority to modify a rule from the time of President Franklin D. Roosevelt.
Congress retains the ultimate authority to modify or set aside any judicially created rules of evidence and procedure that are not required by the Constitution.
But laying aside respondents' other contentions for the moment, we have no doubt as to the Postmaster General's authority to modify the fraud order.
The commission has the authority to modify the contract, and critics said such changes might make the deal unacceptable to Lilco.
It will also renew a legislative proposal giving bankruptcy judges greater authority to modify mortgages on more favorable terms to borrowers and over the objections of banks.
He also asserted that Judge Jackson did not have the authority to modify his order because the issue is now in the hands of a Federal appeals court.
