Need advice on creating one to many relationship between two custom tables

[AmritaT]

I have created two custom tables tab A and Tab B. I can create records on Tab B from Tab A. 

e.g creating problems from inc table.

As per the document, I have created a m2m relationship -

Step 1 -

Step 2 - Add the related list to the table -

Step 3 - ??   I'm not sure what else to do to add the list of records to be seen under this related list.

E.g - I want to be able to see the contracts under the addenda as given below in the screenshot for incident and problem -

Please advice. Thank you.

[dvp]

Addenda -> Contract Number relationship is created by a reference field where as Addendas is created with m2m

[ggg · Accepted solution]

if table A is the parent and table B is the child

create a field on table B of type "reference" and select Table A as the reference table.

Then go to table A, right click at the top of the form, select Configure >> Related Lists >> select your related list.

The child records appear at the bottom of the form.