Gavin,
It's great to see customers looking to really use this feature. You're desired logging, can be found on the History section, which by default should be a tab within the incident you are looking at. If you don't see a History tab option, then you can click on the top right corner of the incident to customize the view and ensure the History tab is checked. This is also a worthwhile time to look at the current layout of incidents, and perhaps placing the History section somewhere else that is more easily viewable for you when viewing incidents. This should be a per user setting, so it won't affect the view of others working on the system. It may also lead to less clicks for you in the interfeace.