Right now you can start filling out the entire application. Transcripts are probably important as they can take a couple weeks to arrive and get processed. The other thing that I would recommend is getting you recommendors added so that when they are finished they can add the letter to your application. As long as you as submitting before the end of July it is still considered early.
From the AADSAS Instructions page:
"What is my “Title?” Who is my supervisor?
If you did not have an official title, you enter the type of activity you did; for example, “Dentist Shadow” or “Nurse Shadow,” etc. The organization is the location where or for whom the work took place and the supervisor is the person who was responsible for you or was in charge of your activity."
For description I focused more on what I took away from the experience and a brief 1-2 sentence description. That is what my wife put and she got in anyway 🙂 I put DMD, MD in the title if that is what they have. Specialty I put in the description if it is not included in the title of the practice.
I am managing my letters via Interfolio. Is delivery from there relatively quick once my evaluations are already recieved?