Is there a way to automatically populate data from the field you just entered into? When you click the second field, it will populate the data from the first field. If you don't click the second field, it will remain blank. If you delete it, the first field won't be affected.
You want it to copy the value of any other field in the file?
Yes. In this case, in the same column, I want the value of the first field 10/22/2018, for instance, to be duplicated when you click into the second field.
As the On Focus script of the field you can use something like this:
event.target.value = this.getField("Name of other field").valueAsString;