Hi  Martha Gomez,

You put that column/field which containing records of other table which linked with this master. So you can use the widget called "many2many_tags", it will showcase correct record details.

In below example, I put the Sales Order field and that contains multiple records against each customer. 



Fell free to upvote answer if it works.

Thanks & Regards,
Sunny Sheth (shethsunny555@gmail.com)