Identifying period of time with two sources

Hello Everybody,

I would need some help.

I have 2 different sources:

- The first one is a list of different shops where price activities are done on fruits with the sales linked to it during the period of the activity:

- The second one is the total sales per month for each shop:

I would like to flag (ie. color) on the second graph the months when activity are implemented as well as which activities on which fruit.

Here is an idea of what I would expect:

Any help would be appreciated. I have attached a sample workbook to this post.

Cheers,

Jonas