How to close child table grid ? or the dialog box

@Akshay_Prajapati @Preyash_Shah @brian_pond @krnkris @revant_one

Hello Guys, I want to close or hide the dialog box when the child table grid button was geting clicked.
I have child table name Pipeline i have i want to edit the button when its getting to edit after that i want to close the dialog box when it’s getting clicked

Please some one help.