You need to report all your income no matter how you get it. You need to report it from your own records. Just report the grand total as Cash. You don't need any 1099 tax form or anyone's EIN number. Only the total income goes to schedule C line 1. It isn't broken out by payer or how you got paid.
If you want you can enter the payer name and amount in Turbo Tax just so you have a backup record of them. But only the total goes on your tax return.
Did you look at this FAQ? How to enter income from Self Employment
https://ttlc.intuit.com/community/self-employed/help/how-do-i-report-income-from-self-employment/00/...
Does Turbo Tax maybe want an EIN number for YOU? Do you have your own EIN number? Did you say you pay employees?
