How to delete selected data row in p-table PrimeNG : Angular

I'm working on p-table PrimeNG : Angular11. But inside <p-table> </p-table> i use <nb-checkbox ></nb-checkbox>. How can write code to delete selected rows?

Also I have delete button which should not visible when no rows selected. which should visible when selected-rows >1.

And when i select left-top of the cell (1st cell of 1st column in the header row) then all check box should be select.

ie : I need like this sample requirement

Can anyone help me please?