稍 is the written / formal cousin of 稍微. 请稍等 is the standard polite 'please wait a moment'; 稍后 means 'shortly, in a little while.' Pattern: 稍 + verb or adjective gives a small degree — 稍大, 稍等.
mistakes
Two readings. Default shāo means 'slightly' and covers virtually every compound. Switch to shào ONLY in the military command 稍息 'stand at ease!' — see the shào sub-entry.
Grain radical on the left — pictures a rice plant with a drooping head. 稍 originally meant the slender tip of a stalk where the grain hangs, and from 'tip / extremity' the modern sense 'slightly, a little' developed. Same radical heads the grain family: 秒, 科, 种, 秋.
Right phonetic 肖 — supplies the sound, drifting initial to shāo. The same stem feeds 削 (pare), 消 (vanish), 销 (melt down), 梢 (tip of a branch). The family shares a 'tapering, getting small' flavor that matches 稍's 'just a tip, just a little.'