Myself working in limit monitoring, but did not send in any work experience yet (since i am 3 years short out of 4). But i guess in my case i would focus on the discussions we have with the portfolio manager if he can hold a security or not, and when he needs to sell (when ratings drop for example). Besides we advice on the IPS' before they are signed (what to put in the restrictions and in what way).
In every case you need to focus on being part of the investment decision process.
So what do you do that might change the portfolio?