Simplification is the act of making something easier or less complicated, or the version you get after you have done that. A teacher’s simplification of a science idea; a simplification of the tax form so you fill in one page, not six. The meaning you are after is “make it easier,” but the word itself is a noun — the verb is simplify. Offices, schools, and news like it because it sounds like a clean improvement. Though actually, the same word can be a mild warning. “That is a simplification” often means you have left out the hard bits, and the speaker is not sure the tidy story is still true. So it can be a goal (we need simplification) or a quiet complaint (don’t overdo the simplification). It is formal-to-neutral, more at home in writing and meetings than in chat with friends, where people just say “make it easier.”