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Repeating some of what has already been said and elaborating a bit...
If they're fog lamps, then it should be possible to switch them on with the dipped beam headlights, or possibly even just the side lights. If they're driving lamps, then they they should be wired in such a manner that it's impossible to turn them on unless the main beam headlights are activated. In some cases there will be a separate switch (so you can have the driving lamps off with the main beam on) but in most cases, they're hard-wired to come on with the main beam and you won't have a switch.
There are regulations regarding the placement of fog lamps, which state that they must be below a certain height and within a certain distance of the edge of the bumper. Driving lamps can be placed anywhere (including below the bumper) as long as they're forward facing. As I recall, the Fiesta XR2i had both fog and driving lamps below the bumper.
Fog lamps traditionally had a lens pattern with vertical bars to spread the light, versus relatively clear lenses on driving lamps which just allowed the reflector to project a distant beam. However, many modern factory fit fog lamps have clear lenses (the Laguna ones being a good example.)
The pictures look factory spec, so I'd say with confidence that they're fog lamps. On a typical modern Renault, they will be operated by the same switch as the rear fog lights (Newer models: click forward and release for front fog on/off and click back and release for rear fog on/off. Older models: turn one click gives front only and two clicks gives both.)
Currently in Horatio's garage:
2010 Laguna III Initiale.