Calculated Item

[jack]

Hi,

Sorry, I'm not sure if I have the right title for what I'm about to ask...
Does anyone know if in Zabbix I can have an item (or graph) which is the result of a calculation like what we have in triggers?

For example:
Item1: num_logged_in (number of users logged in)
Item2: max_users (maximum number of users allowed)

Item3: login_rate = num_logged_in / max_users

Thanks in advance!

Jack