Drill Down or Hierarchy

Hello evreybody,
I create new APP, that I insert the date of meeting with my customers and I summary the meeting.
I have column of:
customer name
meeting date
year-month of meeting
summary

I want to make tab that will show me the name of the customer.
When I will choose specific customer I want to see the year-month meeting of the specific customer.
When I will choose specific year-month meeting I want to see all dates of this year-month meeting.
When I will choose specific date I want to see the details of the meeting and the it can be editing by me.

I also want to make it from another directions:
year-month meeting ==>> customer ==>> dates ==>> details

Hello,
Does anybody can help me’ pleasssse?