URL    = "https://b24-ar17wx.bitrix24.by/rest/1/h0m...";
    ChatID = "1968";

    UserID = 10;

    Result = OPI_Bitrix24.DeleteUserFromChat(URL, ChatID, UserID);

    URL    = "b24-ar17wx.bitrix24.by";
    Token  = "afd0a867006e9f06006b12e400000001000...";
    ChatID = "1970";

    Result = OPI_Bitrix24.DeleteUserFromChat(URL, ChatID, UserID, Token);