You're encouraged to take a look at this presentation by Cheng Quan Li of IBM Development which provides a nice overview of Dashboard Customization in APM UI.
Additionally, the documentation for APM UI customization (v.7.6.0.1 was the current version at the time of writing) can be found here.
For the purposes of this customization "basics", we're going to keep things very simple. No fancy charts or graphs - we will simply display tabular data. Our intent is to get comfortable with the process of customizing APM UI. In later articles we may dig deeper into making your presentation more flashy.
We have a custom-built ITM Agent Builder agent (GBS Supermarket) for this exercise. The data coming from this agent represents the check-out lanes at a typical supermarket. Each lane has a name as well as performance data such as how many customers are waiting in line and the average customer wait time.
Here's what our agent looks like within the Tivoli Enterprise Portal Server (TEPS):
Click the title to read more.