US Immigration from Uganda

How do I get my administrative processing done? There is no need for person to person contact for this step, so the virus will have no bearing on this being able to be completed. So how do I move forward to get this step completed?

Now that I have access to the CEAC portal, I can see now what the uploading is all about, but I have a question:

Under the Required AOS Documents, there is a category for Federal Income Tax Return or Transcript. I was under the impression you had to upload 3 years worth of transcripts and W2s, but I am only able to upload a single document. Do you use the "Additional AOS Supporting Documentation" option below to upload additional years worth of transcripts and the W2s. Alternatively, I could combine them all into one document, but I've read elsewhere on visaforum that this is not a good idea to do this.

Thanks

My husband and I already had the interview and is waiting on administrative processing and the Deliverance of the visa to the DHL office. Therefore it is not an in-person service so how do we get it done?