what the helpfile for Permagroup is.
PERMAGROUP PERMA-GROUP 'PERMA GROUP'
A 'permagroup' is defined as two or more characters who rarely do
anything without the other. In essence, if you very rarely adventure
without a particular person, you are part of a permagroup. (Logging
in and sitting in your guild or gathering items while waiting for
your perma-partner(s), for instance, does not count as "doing
something".)
Avoiding being part of a permagroup is easy:
1) Mix up the people you travel with. This is a good idea for reasons
other than avoiding permagrouping - it gathers you a larger network
of allies to call on when you are in need.
2) Treat everyone according to their IC merits. One simple way to
guarantee this is to not tell other people who you are playing.
3) Ask yourself if you are exploiting your connection to the other
character(s) to gain an unfair advantage over another player. This
can be a difficult determination to make, but fairness to other
players will be at the heart of the staff's decision, so weigh it
carefully.
See also RULES.
Is it that hard?