The phrase "agree on changes" is correct and usable in written English.
You can use it when discussing modifications or adjustments that multiple parties have come to a consensus about.
Example: "After a lengthy discussion, we were finally able to agree on changes to the project timeline."
Alternatives: "reach a consensus on modifications" or "come to an agreement on adjustments."
Coming after years of bickering over the budget — and one day after the U.S. Senate couldn't agree on changes to the nation's gun laws — the new Bowles-Simpson plan evoked a weary shrug on Capitol Hill.
Will all original stakeholders have to agree on changes?
First, in negotiations with the Senate and the White House, they would agree on changes to the Senate bill.
(iv) The parties may agree on changes or procedures for modifying or amending the documentation required by this paragraph at any time.
There can be no return to normalcy until the government and the opposition agree on changes that address the legitimate demands of all Bahrainis.
Mr. Durbin has suggested that if Congress cannot agree on changes to the tax code, entitlements and spending in six months, the automatic spending cuts and tax increases should go into effect.
Mr. Phillips said that the network and the producers had agreed on changes that made the original pilot obsolete.
In January, after a decade of litigation -- largely between Hartz and the state Department of Environmental Protection, which had asserted its authority over waterfront projects -- Hartz and the state agreed on changes that would preserve the view.
A Treasury Department spokeswoman said the Group of Seven often agrees on changes to I.M.F. and World Bank policies among themselves before presenting them to the boards of the two institutions.
Examples include defining and agreeing on new work practices, creating a blueprint for business processes, agreeing on changes to job roles and responsibilities, establishing new performance-management systems, training in new business skills as well as the more obvious training and education in using the new system, and so on.
Last year, the governor and the Legislature quickly agreed on changes for new public employees: cutting pension benefits, requiring employee contributions to health coverage, excluding part-time workers from the pension system and capping lump-sum payouts of accrued sick leave when workers retire.
