How do I file for escrow payments from a previous year's company acquisition

I was an employee at a company that was acquired in 2020. 

 

I converted my options and the shares were sold the day the acquisition closed. Shares were immediately paid out at around 98% of the selling price, with 2% of the price held in escrow. Note that it was not that a number of shares were held in escrow and sold later, but rather ~2% of the cost per share for every share.

 

I wasn't aware of this and filed the income using the 98% number, unaware that I would be receiving escrow payments in the future.

 

Now, I have two questions:

  • What is the flow in TurboTax for filing the 2022 escrow payment?
  • What is the flow for amending my 2020 TurboTax return?

 

Thank you.