FAQ at
http://eventor.orienteering.org/Faq says that is possible to add more clubs for each competitor. IOF FootO competition rules 6.1 says "A competitor may represent only one Federation during any one calendar year."
To my knowledge current rules allow athletes to run for several clubs from different countries and "federation" is bond to competitor's nationality.
a) Is any particular reason why IOF collecting "club names"?
b) Should we expect a "club name" in future WRE result list?
If IOF is going to introduce an international athlete's license (registration valid only for one club) I assume the best way is that we all have same "national competition rule" saying what is allowed and what is not allowed. Our cyclists competing for PRO TOUR team are allowed to compete at home national championships under PRO TOUR team.
c) How other sports regulate this issue. Can athlete competes for several clubs in athletics or in any other individual sport at international competitions and home championships?