The role of a sales & trading MD

I'm looking for guidance on the role of the s&t MD - I'm writing a character that fulfills this role in institutional equity and don't have all the information I require to write the role accurately.

Any insight whether the facts about the job or personal experience would be appreciated, specifically on:

• General day-to-day works of the role
• Hours worked in a day (not incl. wine-dine)
• No. of VP/Associates/Analysts responsible for
• Authority over bonus decisions
• Average pay and benefits
• No. of MDs in an s&t department
• Personality traits that make a good MD

Thank you.