I assume you mean for 2020 and you will need to give your kids a 1099Misc? At the end of the year in January You will need to give a 1099Misc to anyone you paid $600 or more to for the year. But not to corporations or for merchandise. You send the IRS a copy of the 1099Misc with the transmittal summary form 1096. These are due to the person by Jan 31 and to the IRS by Jan 31 also.
If you use the Online version you will need to use the Self Employed version and Quick Employer Forms to prepare the 1099Misc.
How to create W2s and 1099
https://ttlc.intuit.com/community/forms/help/how-do-i-create-w-2-and-1099-forms-in-turbotax/00/25869
