Sourcing RFI: Colloboration Team member- response correction.

Hi

We are on R12.1.3

Sourcing RFI is created  and it has many collaboration members.Each member is assigned to enter Responses for certain sections of the requirement.
One of the Evaluation team member has enterred his response wrongly by mistake.

Question:
How does the user or someone can correct the wrongly enterred Response

PS:We dont want to disqualify the member response,as it would email the supplier,which we dont want.We wanted an option by the owner of the RFI or member to correct the wrongly enterred response.

Thanks