Modelling many relations on powerbi desktop

[SniperPro]

Hello,
I have bellow tables on PowerBI desktop, I want to relate the Account table to the event table without passing by the Opportunity table (the account in the event isn't the same as in the opportunity). The Account is very large so I don't want to duplicate it.
I would like also to relate the case table to the Event table, the relation is 1:Case -> n: Event.
What is the best way to model that on powerbi desktop.

[amitchandak]

@SniperPro , If want an opportunity as a dimension, then you can directly connect it . And remove join

then you can use this method to filter measure and slicer of opportunity

How to filter the slicer of a disconnected table: https://youtu.be/cV5WfaQt6C8

Other wise , two copies of opportunity - one as fact and another as dimension

[SniperPro]

@amitchandak 
Thank you for you reply. 
How can I modify the Control Measure to filter slicer in both way ? In your example I want to use the same Contol City Measure to filter the Cities when I chose a Customer.