Am I able to add my boss' signature and initials (along with my existing) in Fill & Sign?

I already have my own initials and signature in Fill & Sign as I use it quite frequently, but can I add my boss' information as well? Currently I have to insert images of his signature into documents, which sometimes doesn't work as well as it could, as far as where the image shows (disappears) when I send to the back or backward at all. Is it possible to add his info to my fill & sign under my profile, and keep my own as well, to enable to me to take care of documents requiring his signature and/or initials in an easier manner?