Not for partnerhips; I don't know about C corps. I only do a few partnerships, but I also do the individual returns for the tax matters partner. I ask them to upload the partnership docs to the individual link. 

Ok that's what I thought.  We actually set up a business on the 1040 homebase and then invited the client to use the portal that way.  I noticed that there are templates for requests that show partnership and corporation, so I was just wondering.  Hoping that option is more direct in the future.