(49 page pdf)  "Officials are responsible for game management, which does not include monitoring activities on the sidelines, such as social distancing, face coverings, hand washing, symptoms of illnesses and other such issues. This monitoring obligation remains with the responsible parties." (p. 6).  Considerations for Officials are on p. 16; Soccer Rules Modifications are on p 29, as well as on the general Rules Changes and NY Modifications page.