Horizontal departure - from hover engage TU and once past min if speed (50/60kts) engage ALTA.
Vertical departure - from auto hover (30ft) increase collective height bug to suitable height (500ft for example). At safe height to clear obstacles increase hover position forward to 60 kts then follow ALTA as above.
The basic 139 has autohover and therefore a vertical departure can be followed as above which I guess was an option for LABL. Practice using auto modes is essential if you intend to fly in such conditions.