A sprint in a life of Scrum Master

At LivePerson we implement Agile for over 4 years and currently we have about 20 scrum teams.

Our Scrum Masters would like to invite Scrum Masters from other companies to discuss relevant day-2-day practices and dilemmas.
The first session will be about the time spent by Scrum Masters on their roles as Scrum masters vs. their role as developers, managers or whatever they are.

Should Scrum Master role require 100% of ones time?

What is included in his role?

How can a Scrum Master best manage his time?

Please join us to this meetup to share your day-2-day practices and learn from your peers.

*Number of participants is limited, please register in advance.
*The meetup is relevant for Scrum Masters only