How to prevent ungrouping grouped rubber stamps

[adil]

Which product are you using?

• PDF.js Express Plus

PDF.js Express Version

• 8.2.0

Detailed description of issue
When grouping programmatically two annotations (stamps), the user can ungroup them from the button that appears when clicking the grouped stamps.

**Expected **
How to disable or hide the ungroup button

Does your issue happen with every document, or just one?
It happen with every document

Link to document
{Provide a link to the document in question if possible}

Code snippet
{Provide a relevant code snippet}

[system]

Hello, I’m Ron, an automated tech support bot

While you wait for one of our customer support representatives to get back to you, please check out some of these documentation pages:

Guides:

• Customizing WebViewer UI Popups
• Annotation permissions - Default behavior
• Create annotations - Programmatically

APIs:

• Core.Tools.TextTool - disableImmediateActionOnAnnotationSelection()
• Core.Annotations.StickyAnnotation - new StickyAnnotation( [initializer])
• Core.Annotations.CustomAnnotation - new CustomAnnotation(type [, initializer])

Forums:

• Issue with Key permission
• How hide annotation when toolbar group changed
• Download PDF with annotations

[adil]

Thanks
I found the answer in this guide: Popup API with JavaScript | PDF.js Express SDK
Regards