The Name & Number module is part of Fancy Product Designer Plus Add-On.
You can easily add the module via the UI & Layout Composer to the product designer.
Define text or number placeholders
You also need to enable a text element as placeholder for a text (name) or number in the product builder. For a number placeholder you can also define a range of allowed numbers. You can only define one text and one number placeholder in a single view.
In the global and individual product settings you are able to set the values for the dropdown and an additional price for every entry.