Multisite configuration

Use a different Property for each site if you are 100% sure you don’t need an aggregation of data across sites.

You can setup your properties in your Google Analytics account: https://www.google.com/analytics/web/

Thanks, I just read some stuff about it, I maybe misunderstand some stuff:

Do I have to create 5 different views in my admin panels, and then create one filter for each views: Filter->New Filter->trafic to sub directories->equal to and put just /part1/
And do the same for each views ?

You can do that, but if you don’t need an aggregation of data across sites, you can just create a new Google Analytics Property for each site, see https://support.google.com/analytics/answer/1042508?hl=en&vid=1-635762016793115584-977284883

Ok, thank you very much ??