If you look under Configuration\Asset Pages, any state *without* a red (-) button next to it is built-in. Any state *with* a red (-) button next to it was added by you. It's not actually possible to delete the built-in states without editing the database directly.
Only "active" and "non-active" are auto-assigned by Lansweeper. Assets are set to "active" by default and can only automatically be set (back) to "non-active" or "active" by your database cleanup options. All other states, including built-in ones like "spare" and "don't show", can only be manually selected; they're never auto-assigned.
You can easily change the state of multiple assets at once by:
- Clicking the Assets link at the top of the web console.
- Optionally, filtering one or more columns to find the assets you need.
- Ticking the check boxes in front of individual assets or the upper check box to select all assets in the current search results.
- Hitting the Mass Change button on the left and selecting the State field.