Combine graph and filter accordingly

Hello,

I have a question about an graph showing two different values: weight in grams(weekly) and weight in grams cumulative. Now I have two graphs where one graph shows the overal values and one shows the values per location. 

Is it possible to combine this into one graph so at first I see the total overview, and when I click I see the values filtered by location?

If it is unclear what I mean, please let me know. I'll try to add more details or  screenshots.