Hello - TurboTax requested I submit a waiver (form 2210) using TurboTax Premier and filing my 2018 tax returns. What does this mean, and is further action needed ?

more specifically,  form 2210 is the underpayment of estimated taxes form. Part II  of this form TurboTax checked box A only  (not any other boxes) and it indicates 80% waiver but I'm not required to figure your penalty.  I'm just confused if I now am awaiting further guidance from the IRS, about anything else needed ?