You should be able to find the ID, Class (and etc.) options in the customize panel but based on your screenshot, your control navigation seems to be position somewhere else.
The control navigation should look like this:
If you want to reposition your control navigation to show up along with the element settings, you can click on the cog icon in the Pro builder then go to Preferences then set the Control Navigation to Inline then you should be able to see the options like this:
Hope this explains it.