Select a feature and the feature details menu will appear.
To show any of the details click on the eye icon, this will pin the annotations to the map.
You can add, edit or delete data if the detail has 3 vertical dots next to it.
To add a centre point to a feature, move the toggle to the on position.
Any of the added annotations will be displayed on printed output.
Please see additional guide How to add text to a project.