How do I add a W2c? It is a corrected W2, everything is blank besides the HSA correction. Do i just add it under W2s? I tired this the first time then asked if it was W2c

You will start with the original W-2 and will replace the HSA information with the W2c which you received. 

You can either edit your original W-2 information so it matches the corrected W-2, or you can delete it and enter the corrected W-2. Since your W-2c only has the information for HSA, in this case, you will use the original W-2 information but will replace the HSA information with the updated numbers.

Additionally, once you input the W-2 information and press continue and proceed, there will be a screen with the title "Let's check for uncommon situations". On this screen, there will be an option for "W-2 was corrected by my employer". You will check this box.