IBD Analyst role in IPO Process

Would some one be able to clarify what role the analyst plays in each step of the IPO process. The different steps are :

Step 1) Pitch Step 2) Due Diligence Step 3) Drafting of Prospectus Step 4) Printing Step 5) Filing with SEC Step 6) Roadshow Prep Step 7) Make SEC Rec Changes Step 8) Roadshows Step 9) Pricing Shares Step 10)Listing

I am assuming that the analyst builds the pitch book along with the associate in step1. However not sure which of the remaining steps have analyst involvement. I thought associates/VP's are involved with drafting & due diligence sessions. I know analyst is involved with making investor presentations for roadshow.

It would be great if someone could clarify the above.