1. via WebGUI you can view all Active Users via "System --> <Context-Name> --> Active User"
with the following Information "User / Realm / Roles / Signed in / Node / Network Connect IP"
2. via WebGUI you can view all scheduled Meetings via "System --> <Context-Name> --> Meeting Schedule"
is there any possibility to get these data via snmp or other methods to generate some more detailed statistics and not only the amount of active Users ?
What level of statistics are you looking at?
SNMP may not provide more information that what is already on the active users page.
Under log/monitoring -> Statistics there is some more information releated to user activity (like signed in users, url access etc.) for the last past 7 days
One other way that I can think of is you can send all SA logging to a syslog server and from the syslog server if you have an option to get statistical information on users activity you can try that option.
my favorite goal ´ll be to have a statistics how much user are active for different Roles. This information could not really found in the system logs, also different to filter thos informations in the UserLog.
perfect would be to get the infos from <context>--> System - status --> active users where every user is mapped to hisoles.
I don´t think these infos can be extracetd or exported to other systems to run a script and generate theses statistics