Mass data modification

Hi pros,

How can I change Sales Emplyee in part of Sales Quotes (around 300 out of 450)?

I have migrated Sales Quotes for our client, so my user is listed as a Sales Emplyee in migrated data. Now the client doesn't want to see consultants user mentioned in the system. Also they would like to use the field for their purpouses.

Is there a way to delete my name from specific 300 Sales Quotes without doing it by hand?

Best regards,

Nadezhda Rukavishnikova