Often times forms are designed for ease of data analysis, and not end user experience. Breaking a large form (100+ inputs) into smaller chunks (subforms) helps organize content and improves device performance.

Multi-link subforms streamline repetitive inputs. For example, we need to capture 1 - 10 photos for the inspection, but sometimes we need as many as 15. Rather than add 15 image widgets to a form, the ideal solution is to create a multi-link subform that contains one image widget. The end user now has the flexibility to capture 3 or 30 images if the situation calls for it.

If you still aren't sure about subforms, have a look at this knowledge base article for more details.

https://iformbuilder.zendesk.com/hc/en-us/articles/201698440?

Happy Building!