The protection in Scrum is "opt out". By default the process says that you're protected.
If the team feels that they don't need it or want it, they can drop it and just hang an "extra work and ad-hoc requests welcome" sign on their team area :)
Most teams I've worked with want to focus on the agreed work just among the team for the assigned sprint length and not have to deal with ad-hoc requests.
If the team feels that they don't need it or want it, they can drop it and just hang an "extra work and ad-hoc requests welcome" sign on their team area :)
Most teams I've worked with want to focus on the agreed work just among the team for the assigned sprint length and not have to deal with ad-hoc requests.