Can I use a region map for the districts in Riyadh, Saudi Arabia?

I want to use the region map to summarize the data by the each district in Riyadh, Saudi Arabia. Is this possible?

Yup, you need to download the geo jsons for those

How can I download such a thing?

Also, is it possible to have more than one metric field for each region?
So for example if I want to know the number of bookings and users in a region, is it possible to use one map for this?