Leads list in excel, formatting for upload

[Takeya Hill]

Hello!  I have a question about uploading my lead list into click2mail.  So I received my list in an excel file format.  It has about a dozen columns.  I noticed that in the owners name column the first and last names are there and in the last name column there may be a completely different name.  My question is, is there a simpler way to separate the 1st and last names other than selecting, deleting, copying and pasting and is it more beneficial to include the other individuals name on the mailing piece as well?

Thank you