Hi follow the steps like below, you will find these options at Call Routing>Route.Hunt>Line Group/Hunt List/ Hunt Pilot.
1. Create a Line Group with the DNs 1111,2222 and 3333 associated there, select 'Distribution Algorithm=Broadcast'
2. Create a Hunt List with custom name and associate the Line Group here, must select 'Enable this Hunt List'.
3. Create a Hunt Pilot (1234 in your case) and associate the created Hunt List here. Put the DN 8888 at the field 'Forward Hunt No Answer', must select proper CSS at the right.
Never forget to reset the Hunt List before approaching for testing.
HTH.
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