Ok I haven't used it for a while but here is a very rough guide (which eset support should be able to help with btw)
In the console right clicke a client and select view config or maybe view xml
Once it is open you can save it and then edit it
Expand the required setting and change it
Once you are happy with it select all the clients in the console right click and select new task then update the config by selecting your now modified xml
Here are sone links that may clarify
http://kb.eset.com/esetkb/index?page=content&id=SOLN2363http://kb.eset.com/esetkb/index?page=content&id=SOLN2204
