What specifically do you want to monitor?
If you're running on Windows, you can use the AppBuilder to browse to WMI Counters that will--I think--report on those factors. Use the WMI Performance Counter Monoitor
Are you on Windows?
1. Go to APM Settings > AppBuilder.
2. Run through the wizard
3. Select WMI Performance Counter as the Component Monitor Type
4. It will ask you for a target server to browse to. Select your Citrix box.
5. Enter admn credentials for the Citrix box, and it will probe the Citrix box and show you a list of Performance Objects. These are objects you can monitor for the stuff you described above.
6. Select a Performance Object, and it will give you a list of performance counters for that object.
7. Select some objects, and them to a template, and then apply the template to your server.
The key here is that you need to do some research on Citrix and WMI so you can figure out which counters represent the things you want to monitor.
You can also see more in the Admin Guide.