Question about Philips Hue dimmer switch

Does anyone know the exact process of assigning two of these dimmers to a lamp without a bridge?

Many thanks in advance!

So my question again
Is it possible to control several lights individually with a dimmerswitch in my case it would be 2 (I have my dining table in the living room so that I can switch them separately) or is that not possible?
Or are there any alternatives that work together with hue?
With kind regards

Yes, with iConnectHue you can access the same lamp (or lamp groups) with multiple switches. With the Hue app you can also control the same scenes (lamp groups) with several switches. However, not individual lamps (or probably only in a cumbersome way).

I have a group of lamps grouped together in the kitchen, a group of lamps as the living room and a group of lamps as the dining room. Can be switched with the switch:
1) Switch all groups on/off
2) Switch on/off one group at a time (e.g. only living room).
Additional question: What is a scene? For example, is this the living room?