When soliciting signatures from multiple contractors do I need to change the Signature field for each and every signatory? Or will one signature field apply to all of the contractors?

When soliciting signatures from multiple contractors do I need to change the Signature field for each and every signatory?  Or will one signature field apply to all of the contractors?

For example, I am requesting 9 signatures from each of my contractors.  I am sending this request to all 9 of them at the same time (in one email communication).  I want to know should I delete the Signature Field for Instructor 3 when it looks like that field is a carryover from the Instructor 2 entry?

Thank you.

Walter