How to Slice Data with an AND Condition?

Hi all,

I have a question. I have data pertaining to Countries Visited and People. If I wanted to find out the number of people who have visited FRANCE or the UK, this is easy, just use a normal slicer.

My question relates to how do I find how many people have visited FRANCE and the UK? This is a simple example, but in reality, I have many many more countries and areas that I want to account for. Is there a custom visual which offers this functionality? Or are there any other approaches?

Thanks