I have a form with 2 mandatory fields, but once one is filled the other is not required. Means the user can select which one of these fields he wishes to fill. The fields order in the form is not fixed, means the user can modify it and reorder, so these 2 fields are not next to each other (and I can't force them to be).
How can I indicate that these 2 fields are mandatory but the user can select between them? if I mark both of them as mandatory (e.g. color in Red) the user may think he actually need to fill both while that's not really required?
Tnx in advance!