The pool monitor will be listed under the Pool List -> Properties tab (the 'Active' box that you see the monitor listed in.
Edit: I read this wrong before, and found my error when I saw your comment below. I thought this portion showed the node monitors, but as you noted it does show monitors on the pool member. Sorry for the bad info but glad you got the issue corrected!
When you go to Members and click on one of the Current Members, are you talking about the "Health Monitors" under the "Member Properties" section? If yes, that is not the pool monitor. That is a node monitor assigned to the node. Nodes can have a default monitor, a node-specific monitor, or even no monitor at all. This monitor would be for the node itself and could be used to remove that node from all pools should the node fail it's monitor.
The Associating Monitors to Pools and Nodes section of this link provides some generic info and additional links that may be helpful.