The Properties [Comp] box holds detailed information and is where the user can make changes specific to it’s dedicated component. Users can either single left click on an empty section of a component(not on a part) to access, or right click on a component and select the top option to access this menu.
...
This us because the program is recognizing parts, components and design zones in layers(in that order). There is also a design zone submenu to edit the design zone with components and parts in the way.
...
Users can also single left click on the dimension line above(or sometimes below) a component to access the component properties. Just ensure the cursor is hovering over the dimension line, and once clicked, the entire component should have a darker blue outline.
...