MyComeen is your dedicated interface that allows you to see where your desk and colleagues are located.
To go to MyComeen you can use the link https://my.comeen.io/ or on your add-on click here:
You arrive on a home page with a map where you can see your desk with a green circle and your colleagues with their pictures (if they have one in their Google/Microsoft account):
You can increase the size of the map by clicking here:
On this map you can select the building, the floor (and different zones in it), the date and the time of the day you're planning to come: