KiCad Eeschema Annotations: Prevent numbering for certain components?
Every part needs to have a unique identifier, usually called the &quot;reference desginator&quot;, so that you can account for it correctly in the BOM (bill of materials).
You should not try to use the reference designator as a functional label (what if you have more than one of the same function in the design?) — instead, you should create a new property field for the part and use that in the silkscreen, assembly drawing, etc. in place of the reference designator.