Nested Screen Control Settings

Add a Nested Screen control into which select a separate Screen that is in your ProcessMaker Platform instance.

Control Description

Use the Nested Screen control to nest a separate Screen into that control. In doing so, the separate Screen embeds into the Nested Screen control. The Nested Screen control is a placeholder for the embedded Screen such that the Request participant experiences the nested Screen as designed. When the Task loads the Screen using a Nested Screen control, the Nested Screen loads the latest version of the referenced Screen.

The Screen containing the Nested Screen control is the parent Screen. The Screen that is nested is the child Screen.

During an in-progress Requests, both Request and Magic Variable data pass to a child Screen when it displays within the parent Screen. Furthermore, information that is entered into a child Screen displays in Request summaries that use the parent Screen.

A nested Screen has the following attributes that vary from how it may have been designed:

  • CSS takes precedent: Any CSS designed in Custom CSS mode in the parent Screen takes precedent over any CSS designed in the child (nested) Screens. The Request participant experiences one design experience without a variety of design styles.

  • Submit Button control in nested Screens is hidden: During in-progress Requests, the Submit Button control is hidden in child Screens so that the Request participant uses the parent Screen's Submit Button control to submit the Task.

  • Two Screens cannot reference each other indefinitely: A child Screen that has already displayed within a parent Screen cannot display again in the same Request. This prevents an infinite loop whereby two Screens using Nested Screen controls reference each other indefinitely.

Only Display- and Form-type Screens may be selected for nesting into a Nested Screen control.

Screen designers can easily build a Screen by placing modular components into one Screen. For example, in a Screen designed for a purchase request, use Nested Screen controls as placeholders for the following components that are designed in separate Screens. Each of these Screens are nested into its own Nested Screen control.

  • Nested Screen control for Screen 1: Personal information

  • Nested Screen control for Screen 2: Payment information

  • Nested Screen control for Screen 3: Billing information

  • Nested Screen control for Screen 4: Shipping information

This control is only available for Form-type Screens. See Screen Types.


Your user account or group membership must have the following permissions to design a Screen unless your user account has the Make this user a Super Admin setting selected:

  • Screens: Edit Screens

  • Screens: View Screens

See the Screens permissions or ask your Administrator for assistance.

Add the Control to a Screen

Follow these steps to add this control to the Screen:

  1. View the Screen page to which to add the control.

  2. Drag the Nested Screen icon into the Screen Builder canvas. Existing controls on the Screens Builder canvas adjust positioning based on where you drag the control.

  3. Configure the Nested Screen control. See Settings.

  4. Validate that the control is configured correctly. See Validate Your Screen.

Below is a Nested Screen control in Preview mode.


The Nested Screen control has the following panels that contain settings:

Variable Panel Settings

Click the control while in Design mode, and then click the Variable panel that is on the right-side of the Screen Builder canvas.

Below is the setting for the Nested Screen control in the Variable panel:


Advanced Panel Settings

Click the control while in Design mode, and then click the Advanced panel that is on the right-side of the Screen Builder canvas.

Below are settings for the Nested Screen control in the Advanced panel:

Visibility Rule

Note the following regarding how to use visibility rules:

Device Visibility

Select on which device types this control displays:

  • Desktop: The control displays only on desktop devices. Enable the Show for Desktop toggle key.

  • Mobile: The control displays only on mobile devices. Enable the Show for Mobile toggle key.

CSS Selector Name

See the following best practices regarding custom CSS in Screens:

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