755 ILCS 9/70

(a) A supported decision-making agreement extends until terminated by either party or by the terms of the agreement. (b) A supported decision-making agreement is terminated if: (1) the Office of Inspector General or Adult Protective Services substantiated an allegation of abuse or neglect by the supporter; or (2) there is a restraining order against the supporter by the principal. (c) A principal may revoke his or her supported decision-making agreement and invalidate the supported decision-making agreement at any time by: (1) canceling or destroying the supported decision-making agreement or directing another in the presence of the principal to destroy the decision-making agreement; (2) executing a statement, in writing, that is signed and dated by the principal, expressing his or her intent to revoke the supported decision-making agreement; or (3) verbally expressing the intent of the principal to revoke the supported decision-making agreement in the presence of 2 witnesses. (d) Unless the supported decision-making agreement provides a different method for the resignation of the support, a supporter may resign by giving notice to the principal. (e) The last signed agreement holds.