AASTRA DT4x2 for MD Evolution User Guide EN - Manual (Page 97)

97 MD Evolution – Cordless DT412 / DT422 / DT432
Group Services
The calls presented on your secondary groups are also
automatically managed by the system, but without any particular
priority.
Notes:
It is your system administrator's job to define how each
hunt group will operate. It is also the system administrator's
responsibility to define to which hunt group(s) you will be
assigned, and which one will be your primary group.
Your facility may contain up to 16 hunt groups.