The phrase "arranged largely" is correct and usable in written English.
It can be used to describe something that has been organized or structured primarily in a certain way or to a significant extent.
Example: "The conference schedule was arranged largely around the keynote speakers to maximize attendance."
Alternatives: "primarily organized" or "mostly structured".
A senior Republican aide in Congress said that the meeting was arranged largely to amplify an aura of inevitability around Mr. Bush, and Bush advisers said before the discussion today that it was likely to be fairly broad.
The poems in the book are arranged largely chronologically, which, as Linda Leavell, Moore's biographer, pointed out, illuminates the progression of her work leading up to the penultimate poem, "An Octopus".
The scale of the houses and the way they are arranged are largely a response to the high Scandinavian divorce rate.
E-mail is largely arranged along a linear timeline, with little thought given to context and topic.
She had immigrated only eight months before, after a marriage largely arranged by the Buddhist temple where Mr. Ruzzamenti volunteered as a groundskeeper.
He enters the anonymous room in which we have arranged to meet, largely concealed by a press officer; his face, which I know like the back of my hand, is also largely concealed by a very pale grey, 1930s moustache.
As the collection, which is largely arranged chronologically, moves toward 1930 and the normalization of the talking feature, the form of the films becomes more sophisticated, with multiple camera angles and occasionally more than one set.
They and other North Koreans spoke only on the condition that they could withhold their names in discussions largely arranged by underground churches operating in China just across the border.
However, the way in which species diversity behaves in spatially different arranged landscapes is largely unexplained.
Arranged marriages are largely a thing of the past.
The songs on the album were largely arranged after Gregg Allman joined the band in Jacksonville, Florida in March 1969.
