URL          = "https://b24-ar17wx.bitrix24.by/rest/1/ztbe...";
    DepartmentID = "74";

    Result = OPI_Bitrix24.GetDepartments(URL, DepartmentID);

    URL    = "b24-ar17wx.bitrix24.by";
    Token  = "c03fa966006e9f06006b12e400000001000...";
    HeadID = 1;

    Result = OPI_Bitrix24.GetDepartments(URL, , , , HeadID, Token);