I'm a software developer and next year at my company we start using two-weekly sprints.
A couple weeks before knowing we'd start this process I talked to my boss telling him I want to work less with getting one week off per month to have time to grow my own business. He was perfectly fine with that.
After getting trained in SCRUM he approached me telling me getting one week off per month won't be possible anymore as the sprint planning will be compromised.
Is this a valid argument? I see one calculates the team outcome on average productivity rates per sprint and when I'm absent every 2nd sprint for 50% of the time there's a dent in the statistics.
But is this really how sprints should work? That would mean every involved person enormously loses flexibility for vacancy planning which to me is essential to be a happy dev.
On a side note: He would be fine with taking one day off per week or 2 days off bi-weekly. But those suggestions are bad in view of my then business related travel activities.
On another side note: I love my boss, to me he's the prototype of a perfect leader and we're on a friendly footing. Against this backdrop, how would you approach the situation?