I have a lookup column called "Customer" to my customer list. This list has a few single line of text fields like address and contact name. Is there a way to set these fields in my form when a user selects a specific customer. Attached are the single line of text fields from the customer list that the lookup points to for reference.
You could use the inline function "lookup" in a calculated value control on your form to display this information:
Lookup an item from a SharePoint list and insert a column value into this runtime formula.
lookup(list title, column to filter on, value to filter on, output column)