Display not only daily, but also monthly X AXIs

Hi, i’m quite newbie beacuse piwik always work like a charm for me almost out-of-the box (great job!) but i’m having an issue and can’t find where to solve it.

I just want to add a public acces to a monthly X-AXIS dashboard to a site, not a daily basis one, and to keep the daily stats as ussual beacuse for internal use it’s very usefull this display, but for “external” view it’s uite better to see monthly evolutions, wich is less “noissy”

thanks a lot!