Open custom Client Module instead of List page for my custom App (Freedom UI 8.3)

I've create custom page, but when I open Section from Workspace it opens a List Page for the object by default.

Can you please help:
1) how to open Custom page (Freedom UI) from Workplace instead of List Page

2) how to add a custom page with 4 tabs. Each tab contains 2 Rich text (one for text, another for image) fields and below one Lists (with different filter criteria for each tab) from another data source?

Something like this: