Forms - allow fields to be assigned to multiple signers

For instance, imagine that you have a form with 4 signers (student -> guardian -> teacher -> WBL coordinator). There may be fields that any of the 4 signers may want to fill out. If field X was assigned to student, guardian, and WBL coordinator, the student would first be able to fill it out and submit the form since they are the first signer. When it is the guardian's turn to sign, they will have the field prefilled with what the student entered but will be allowed to modify it (same as any other prefill option). Since this was not assigned to the teacher, they see what was submitted by the guardian (read only). Finally, the WBL coordinator sees the value as a prefill and can modify if needed.