URL    = "https://b24-ar17wx.bitrix24.by/rest/1/h0m...";
    ChatID = "2530";

    Result = OPI_Bitrix24.DisableChatNotifications(URL, ChatID);

    URL    = "b24-ar17wx.bitrix24.by";
    Token  = "2b185168006e9f06006b12e400000001000...";
    ChatID = "2532";

    Result = OPI_Bitrix24.DisableChatNotifications(URL, ChatID, Token);