The pure display of data on the website was relatively simple; administration of the data, by its nature, is a little more complicated. As administrator, you have to be able to display, modify, insert, delete, and publish data. This involves significantly more interactivity than there was in the simple listing on the website.
Joomla!, by the way, administers all menu items of the component in the [prefix]components table. The menu items of all of the components in the administration area have to be recorded here as well. The com_auto component was also entered there:
A graphic that is to be displayed next to the menu is also recorded there ('js/ThemeOffice/component.png'). You will find the graphics in the [pathto-Joomla]/includes/js/ThemeOffice folder.
You need several files to be able to create the administration component. You will find the following files in the [pathtoJoomla]/administration/components/com_auto/ folder:
/administration/components...