If you are retired and entering Social Security or retirement income you are probably in the wrong place in the software if it is asking you for an employer's address.
Do not try to enter your SSA1099
or RR1099RB as a W-2. Go to Federal> Wages & Income>>Retirement Plans and Social Security (SSA1099 and 1099RRB) to enter your SSA1099.
To enter your retirement income, Go to Federal> Wages and Income>Retirement Plans and Social Security>IRA 401 k) Pension Plan Withdrawals to enter your
1099R.