Note that you need at least 3=read access to model server to see the Viewer icon
When you open it, there is a (now empty) space to the right, where the view will be displayed once a model is uploaded. On the left, you will be able to upload your model (s). When no model is uploaded, the only option is to create a new model.
Upload your model(s) and they will all appear in the list. Please be aware that models - especially large ones - take a bit of time to upload. First the file is uploaded to your dRofus server, then from there to the Catenda IFC (BimSync) solution. Then, the model is processed meaning all fields are interpreted. All of these take time, but you should wait until all are finished before you go on, to make sure all settings are updated. When it is finished, you will get a message below the model that "Processing is done", and afterwards the uploads should look like this:
Matching keys in dRofus and IFC
To be able to see the dRofus data and the geometrical model as one integrated whole, you need to set up the right keys for matching on both sides. To do this, click on the tab "IFC configuration".
Here, you should be able to choose the field in dRofus that should match a field in the IFC. You can choose any of the Room Properties that you have defined for your project on the dRofus side - on the IFC side you can choose any field you want as long as you know the name (Choose "custom" as shown below, then type in the names).
If you don't know what the field you want is called, save and click on a room in the model. Then choose to see "IFC data"on the room, and you will see the content of the IFC with the labels used...
When this is done, you should be able to se set a 2d floor plan of your model on the right side, like shown below.
Once the model is opened, for example for rooms, you should make sure you have included the "Match" column to your list, to be able to see which objects are linked and which are not. The easiest way to do this if you don't see it in your view, is to choose add/remove columns, then choose "Restore default". Match is one of the columns in the default setup for both rooms and occurrences.