N3 — outside your level filter
に代わって
in place of N; on behalf of N — one party stands where another would have
本日は社長に代わりまして、私がご挨拶申し上げます。
honjitsu wa shachou ni kawarimashite, watashi ga go aisatsu moushiagemasu.
Today, on behalf of our president, I will say a few words. formal
手紙に代わって、メールが連絡の中心になった。
tegami ni kawatte, meeru ga renraku no chuushin ni natta.
Email took over from letters as the main way of keeping in touch. neutral