I checked on CMAS site and found out that I was wrong, I apologize for that. It is recommended for CMAS1* diver to dive to 20m limit.
1.1 This training programme aims at introducing the fundamentals of SCUBA diving to new entrants to the
sport of recreational SCUBA diving, which will enable them to undertake no-decompression stop
dives, whilst using air as a breathing gas, to a maximum depth of twenty (20) meters in a safe manner.
4.3 If he has received additional training he can dive to dive to a recommended maximum depth of
twenty (20) meters with other SCUBA divers of the same level.
So, it is basically up to individual divers whether to see this as a rule or a mere recommendation.
Anyway, back to the thread. When I got my computer, I went through the manual, and was more confused then before reading it. It took me whole day of silting info to come up with my own user sheet. Now, I need 5 minutes max to find out how to do anything I need/want with my computer (if I forgot in the first place).
So, maybe people do read instructions, but just can't use what they found in there.