Notice of Filing and Immediate Effectiveness of Proposed Rule Change To Add, for a Temporary Period That Begins on June 17, 2020, Commentary .06 to Rule 7.35A; Commentary .03 to Rule 7.35B; Supplementary Material .20 to Rule 76; and an Amendment to Supplementary Material .30 to Rule 36 To Support the Partial Return of Designated Market Makers to the Trading Floor