@TwinkleChawla

Repeating Dynamic Layout is a traditional UI component, and as such is not available in constellation.  However, the equivalent feature in constellation where a piece of the UI (View in constellation) is repeated for each row / page is configured by using the "Field Group" option when setting the "Display as" setting for embedded data in a view.  This allows you to select a view defined on your data object as the repeating UI.

There is some more information in the below linked documentation.

Configuring a list of records Embedded Data field (pega.com)