It is not possible to add more POI presets to your dashboard. But if you want to use POIs that are not in the list, you can add a node on the map and add the tags manually by typing them.
Also, when you want to map a building, it is better not use 'landuse=construction', but 'building=yes'.
Welcome! As rendle says, you are not limited to the dashboard, but can add anything you like. The online editor you are using is called Potlatch. I recommend reading the wiki pages. It really is worth spending a few minutes on.
OpenStreetMap
Discussion
Comment from rendle on 29 March 2010 at 17:43
It is not possible to add more POI presets to your dashboard. But if you want to use POIs that are not in the list, you can add a node on the map and add the tags manually by typing them.
Also, when you want to map a building, it is better not use 'landuse=construction', but 'building=yes'.
Comment from davespod on 29 March 2010 at 20:36
Welcome! As rendle says, you are not limited to the dashboard, but can add anything you like. The online editor you are using is called Potlatch. I recommend reading the wiki pages. It really is worth spending a few minutes on.
osm.wiki/Potlatch
Also useful is the general OSM beginner's guide, available from the wiki homepage:
osm.wiki/Main_Page
Useful for reference is also the help text available by pressing the Help button in the bottom left-hand corner of the editor.