The correct installation depends on two things:
- The quality.
- The attributes.

Each piece of equipment has its unique widget. Once you click on a piece of equipment in the workshop, widgets attached to that particular equipment will automatically appear for you to install. You can find the available widgets in your base by clicking on the workshop > Storage box > Widgets.

To gain additional high attributes of the equipment, install high-quality widgets in red, and both (widget attributes) and (equipment attributes, the produced ones) must be similar.

There are exceptional cases; for example, you do not want to increase some of the attributes. You wanted to add something that is not available, here you will gain features such as attack points for specific units or defense, depending on what is available.