First, add your Pandoras Box systems to the Device Tree, either from the Device Types tab or from Assets in case they are connected already.

Now, select the Sites that should be combined, right-click one and choose "Create Virtual Site".

Please note: If the Sites that you would like to add to a Virtual Site, contain Sequence information (i.e. Containers), it will be deleted in the course of the Virtual Site creation and this action cannot be undone! Active values will also be reset. That is the reason why it is recommended to create a Virtual Site before starting any other programming. If you however merge later but still like to keep (some of) your Containers, simply copy them first to a Site that you add to the project temporarily and from there to the Virtual Site.

As you see in the example, the Sites with ID 2 and 3 do not appear in the Device Tree any more because they were merged to the Virtual Site which has ID 4. All so called Virtual Layers control Video Layers from both Sites, same applies for Audio Tracks and other layer types except Camera and Output Layers which are kept as "single" layers as warping, softedging etc. is always done individually. If you renamed those Layers before, the names are forwarded to the Virtual Site.

If you now select Virtual Layer 1 for example and change a parameter, the Video Layer 1 of all included Sites will show that change. Of course this includes active values and Sequence programming likewise. If you would like to assign content, make sure, that all Clients have the content, which means that it was spread everywhere via automatic Auto-Spreading or manually if you deactivated the feature.

If you add a layer to a Virtual Site it is automatically added for all Sites combined in it. Simply right-click the Virtual Site in the Device Tree and choose a layer type. All other options from the context menu are explained in the chapter Context Menus - Device Tree.

The next paragraph explains how to control individual layers.

Please select the Virtual Site in the Device Tree and have a look in the Inspector. Click the button "Open Virtual Site Tab" or open it alternatively via the Tabs menu. Remember that you can save custom views of the interface.

The Virtual Site tab shows you the names and IDs of all merged Sites. If you select a Site there, you can see the all related settings in the Inspector which is not only of interest for entering an IP to connect to.

Now, select a Virtual Layer to see the according information in the Virtual Site tab. If you would like to remote control layers, in most cases you need the IDs of the underlying layers.

The "Enable" check box is of high interest. If you disable a layer, the Virtual Layer would not forward parameter changes to it anymore. That way you can program on individual Sites even though they are part of a Virtual Site. Depending on your show you might need layers which control all combined Sites but in certain scenes for example it makes more sense to program them individually. It is a good idea to rename layers in the Device Tree, sort them or use the feature to tint them in order to keep track which layers are are controlled.