Adding a ssa-1099 to an ammendment???

To go directly to form SSA-1099 follow these steps:

1. Sign into your account and continue your current return

2. Select My Account in the top right and then Tools

3. Select Topic Search (see attached)

4. Search for SSA- 1099 and then select go (see attached ssa-1099 topic search)

5. This will take you to a page for Social Security Benefits 

I am trying to ammend my 2016 tax return .  we forgot to add my ssa 1099  I cannot find the place to enter when emmending