Filing an additional 1099-NEC?

Hello, I recently submitted Form 1096 and 1099-NECs to the IRS.  I may need to file an additional 1099-NEC.  What is the proper procedure for doing so?  Would I send a new 1096 and all 1099-NECs?  Or just the 1099-NEC that has yet to be filed?  Or something else?