Can a record of Parent, have more than 1 relationship-key to child table?

[Denmas]

Since I am a newcomer in FM, and lack of English.. I've search in forum and cannot find solution.. 

I want to make solution with scenario here:
[parent-table] Agreement fields:

• regs, number
• signing party 01, text
• signing party 02, text
• signing bystander, text
• agreement topic, text

 

[child-table] CLIENT fields: 

• client ID, text
• client Name, text
• client Addr, text
• client Phone, text

 

The Final result I want is to make an agreement letter, that contain all signing-party in one record of Agreement tabel.
----
AGGREMENT LETTER
today, have been met parties:
Party 01,
Name  :
Address :

Party 02,Name:  Address