Create the group
Go to Modern Fields menu in the left admin bar.
All your group fields will be displayed there. For now, the list is empty.

Then click on Add a new fields group on the top right corner.
Give a name to your group, and a description. Save anytime with the top right Save button.
Add and customize fields
Now you can add your fields from the top left + button. Each field is represented as a block.

More fields will come in the next releases, as repeater, relationship, post object…
Each field has a lot of customization in the right sidebar.

Arrange your fields
Modern Fields uses the block editor. It means that you can use all the native blocks to make great interfaces.

Use the Columns, Row and Grid blocks to make stunning interfaces.
You can also add text, images and videos to help your customer better understand what is expected in each field.