Hi Florian
At this time, we don’t have a way to filter exactly as you envision. Have you tried filtering by venue with Advanced Post Manager.
We’re limited in helping with styling customizations, per our Scope of Support / Terms.
If you want to customize things further, we recommend starting at the Themer’s Guide.
If you think that is something you would like as a feature I encourage you to visit our User Voice Page and either upvote an existing request or make a new request there.
You can suggest it it http://tribe.uservoice.com.
Thanks
Courtney 🙂