How to Create Custom Section? Follow

Sections are useful for grouping fields together. You can create a section where all relevant fields should appear in the Form. 

For Example:
Section Name: Social
Fields: LinkedIn, Twitter, Instagram, Facebook
Note: The section will only be visible under the contact layout page, it will not be visible anywhere else.

To create a custom section:

• Navigate to the Profile icon in the top right corner.
• Click on Setup.
• Head over to the Customizations category.
• Click on Contact.

• Click on the Drop-down arrow near the New Custom Field icon in the top right corner. 
• Click on Add New Section.

• Provide a Section Name.
• Select the layout option to render fields in one or two-column layouts. One Column will display one field on each row while Two columns will display two fields in one row. 

• Once you save the section, You can create custom fields and add them to the section.