The phrase "arrangements are simple" is correct and usable in written English.
You can use it when describing the ease or straightforwardness of certain plans or setups.
Example: "For the event, the arrangements are simple; we just need to set up a few tables and chairs."
Alternatives: "the plans are straightforward" or "the setup is easy."
The arrangements are simple – banjo, fiddle, guitar, cello – but the results often intense.
"The hallmark of soul music for me is that the arrangements are simple rather than virtuosic," McMicken says on the Web site, "and that the sound creates a feeling that is intuitive rather than intellectual".
The arrangements are simple, eschewing complexity for the modest.
On the single Sleep Paralysis there is more organ, the arrangement is simple, and the lyric is stark: "I've got this feeling I were dead, and there's nothing wrong".
Moreover, the mathematical formulation of such arrangement is simple than those of standard scanners which results in less computing cycles, thus, making the parallel design more appropriate for 3D real-time processing (Rodrigues et al. 2013a).
Compared to the genomes of other spirochetes, this arrangement was simpler than in Borrelia species where there is a linear chromosome and numerous circular or linear plasmids, and in Leptospira species where there are two or three major replicons.
Further simplification becomes possible by considering particular FDA arrangements that are simple to handle and yet able to provide valuable insight.
The instrumentation and the arrangements are usually simple: three or four instruments and, frequently, about the same number of chords.
Leaves are classified on the basis of leaf arrangement and whether they are simple or compound.
But it added: "A policy was established in September 2012, which relates only to routine secondary care referrals, to ensure that there are simple uniform arrangements in place to ensure the health board utilises its own services, or services established with other Welsh providers, before securing treatment with other NHS organisations.
The other proviso was that the arrangements should be simple, even simplistic: "Singing, fiddle, electric guitar, no tricks" – that was their want-list.
