Hello there! Outside of the existing presets, we do not have this functionality to format a number field in that way natively in the Form Designer yet. However, you can submit your request as a feature request, so that our team can take a look at it sooner and implement it the future.
This will really help us to improve and add additional functionalities to our form designer.
Hi, just want to add. As a workaround, you can use a Text Field instead and utilize Allowed Characters and Mask for formatting. This will save the whole value, numbers and dashes, as a text and then you can just add a logic to reformat and parse the value.