Hello Andre,
Thanks for your message.

In your application, I would suggest to choose 3 to 4 locations (this is to be specified online at BCG, Bain and McKinsey).
Unless there is an economic circumstance in Zurich/Geneva, they will offer you an interview as long as your profile matches with the need of the office.

I would also suggest to network with the offices you are interested in, maybe with alumna from your school/current company in order to have a referral and understand what the office currently needs in terms of qualifications.
Let me know by PM if you have any questions,
Best of luck in your interviews,
Norah

Hi,

When you are applying, you select several countries and put the % split. So technically you should add other preferences. By default, you'll be invited to the country of your first preference if you have a work permit, unless there is a hiring freeze / limited number of opened position in that country.

Best