You can easily add customized page labels to your document with PDFelement.
To do this, follow these steps.
Step 1: Open a PDF and navigate to "Page".
Step 2: Click "More"—“Page Label”.
Step 3: Choose "Page range" and "Begin new section" for displaying page labels.
Step 4: Click "Apply" to save your changes.
1. Go to the Thumbnail on the left sidebar.
2. Right-click on a page thumbnail and select "Page Labels".
3. Choose the style and click Apply to save it.