Content type 1 to N relation view First of all sorry if this is a basic question.

I have two content types "Category" and "Items"

I used "Entity reference" to link  both content types with each other.

Category contains "Category1, Category2, Categry3" as data.

Items contains 10 items 1 to 10.
Lets say each categoy contains 3 items.

How can I create a view of items grouped by categories?
For example:


Category 1:


Item 1
Item 2 
Item 3

Category 2:


Item 4
Item 5
Item 6

Category 3 : 


Item 7
Item 8
Item 9
Item 10



Thank you very much in advance for your support
Let's suppose your nodes titles for Category content types are Category N and for Item Content Type are Item N.

Create a view on content filtered by content type = category, then in views advanced section in  Relationships add relation on your entity reference field on category content type, then in the field section again add a title but in Relationship section of the field settings choose your relation created before and then Group Results by Category title field.