portfolio sorting

Hi there,

I would like to know how I can get a portfolio sorted based on multiple criterias (categories) at the same time. For example: I’ve assigned to each individual portfolio item two categories such as:
1) an activity (categories such as: arts, music, paiting, dancing,…)
2) a place (categories such as New York, Washington, Miami,…)

Let’s say I wan’t to see all ‘music’ entries in ‘New York’, e.g. all portfolio items which match the two categories ‘New York’ and ‘music’. How can I set this up?

Many thanks,
Lasse