Each page with a list, in the site admin, has table settings.
They are located on the top right.
In these settings, you can set the fields that will be displayed in the list table.
You can also set the number of items to display per page.
The settings take effect only after clicking on the "Apply" button.
It is important to remember that these settings are individual for each individual user. If you hide some fields for yourself, they will remain visible for others.
