Hi, CapriciousRobber!
I like the way you are trying to understand the gamemode. I'll try to answer your questions.
What is not following your /duty?
According to our current
Rules, only the
Security class is
obliged to follow their duty. Thus, by
not following duty we mean
the actions of securities which are not directed to protect the president at the best of their abilities. Of course, you'll say that this definition is very vague. Indeed, it is an actual problem that was repeatedly discussed throughout the whole server history (if you want, try searching for something like "security duty" and you will see). Right now we are looking for a proper solution to rework the security class. If you have something interesting on your mind, feel free to suggest or discuss it.
Can terrorist just completely forget about killing the President and hunt down security/civilians/police?
Yes, they can.
You see, the aforementioned rule is very vague already, and you are asking to spread it to another class. It won't solve any current problems, but it will surely add new ones. The issue we're discussing is a matter of some sort of ingame culture. I think that enforcing any 'cultural' aspects is principally wrong; instead, we should build the environment that would softly stimulate players to pay more attention to the gamemode.
Besides, this server wasn't always under Jonne's ownership. The previous owner and his companions had their own point about solving the problems. Among other things, they tried to enforce duty on the terrorist class too. Well, people mostly didn't follow this rule, and it led to nothing but abuse and more dramas on the forum. So, my reasonings are based not only on theory, but on practice too.
If so, shouldn't security be allowed to do it as well?
Well, removing the rule could do the job. But we also don't do it for a reason. A very small effort is required to kill a defenseless president, especially if he is a newbie, so we should have an option to make securities protect. Without having a better alternative, the current system is better than nothing. Besides, if we removed it, there wouldn't be a difference between securities and cops but the better weapons of the first ones.
I want to add one thing. Don't forget that admins are human beings too, not soulless robots, and the Rules are supposed to enhance the gameplay for everyone, not to humiliate or abuse. If you think that you were mistreated, discuss your situation with Staff members, they wouldn't hesitate to explain you why you were wrong, or to apologise if they were wrong. Mostly the Staff members dispatch a dialog window which reminds a player about the rule; they shouldn't do it if a player is fighting. If a player consistently ignores it, they reclass him.
P.S.
I still think a more effective way to solve duty problems would be to change the scoring system so there isn't any reward for not following your duty (in this example, getting rid of kills/deaths stats and keeping track of president kills and killing classes near the President instead).
That's an interesting thought, but I can already say that not too many people will like your suggestion if you were to make a poll or something.
Unless something better is suggested, I will.