Restful ABAP CDS metadata extension columns

How to automatically tick all of the check boxes?
after opening the object page, the table is not automatically displaying the records because the columns are not ticked in the settings.

 AJeB_1-1713536651876.png

and why the position of all columns is not correct after viewing it in web browser? 
I already added the @UI.lineItem: [{ position: n }] in the metadata extension but its not working

AJeB_0-1713536554691.png

Fiori

AJeB_2-1713537060159.png

 

 

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