Child-Screen Groups

Child-screen groups are used to place multiple complete playback layouts inside one program. They are mainly designed for combined-screen and multi-screen scenarios.

In a normal single-screen program, you usually do not need child-screen groups. The default group is enough.

When to use child-screen groups

Use child-screen groups when different devices need to play different parts of one combined program.

For example, a three-screen display can use three device labels:

• left
• center
• right

The program can then contain three child-screen groups with the same names. Each group is a complete layout for the matching device.

When the program is played on the display devices, each device plays the child-screen group that matches its own device label.

How it works

Each child screen has a group name.

• A blank group name means the child screen belongs to the default group.
• Child screens with the same group name are played together as one group.
• Each child-screen group can have its own child screens and media.

The most important rule is:

The child-screen group name should match the device label.

If a device label is left, create a child-screen group named left. If another device label is right, create a child-screen group named right.

Step 1: Set device labels first

Before editing the program, set labels for the devices in the combined-screen group.

The labels should clearly describe each device position, such as:

• left / center / right
• top / bottom
• 1 / 2 / 3

Keep the labels simple and consistent. These labels will be used again when creating child-screen groups.

Step 2: Create child-screen groups in the program editor

Open the program editor and find the child-screen group selector in the child-screen area.

Create one child-screen group for each device label. For example, if the devices are labeled left, center, and right, create the same three child-screen groups in the program.

When a new child-screen group is created, the editor creates a full-screen child screen in that group. You can then adjust its layout and add media as needed.

Step 3: Edit each group separately

Switch between child-screen groups in the selector.

For each group, edit the child screens and media that should be played on the matching device.

For example:

• The left group contains the left part of the content.
• The center group contains the center part of the content.
• The right group contains the right part of the content.

Each group is edited independently. Adjusting one group does not directly change the layout of another group.

Step 4: Save and publish to the combined-screen group

After all child-screen groups are ready, save the program.

Then publish the program to the combined-screen device group. Each device will use its own label to select the matching child-screen group for playback.

Notes

• Ordinary single-screen programs usually only need the default group.
• A blank group name means the default group.
• Deleting a child-screen group deletes all child screens and media inside that group.
• If a device label does not match any child-screen group name, the playback result may be incomplete or fall back to the available default content.
• Keep group names consistent with device labels. Extra spaces are ignored.