Electronic Signature Checklist Task to choose which assignment to print the document

Summary:

Checklist task with e-signature can choose which assignment details to be printed on document (report/contract)?

Content (please ensure you mask any confidential information):

We are implementing the electronic signature to a checklist task for the schools mainly for employee to sign the contract in the schools. Some employees / teachers are having multiple assignments, do you know if we can add additional fields for employee to choose / enter the assignment number passing to data model to get the correct assignment details printing on the document/Contract when signing the checking (click on Done button)?

I found the Task type = Electronic Signature, cannot link to a DFF