Adding Overflows to Custom Dashboard

Hello,

I have recently created a custom dashboard and i’m looking to get the ‘Delete Country of Origin’ option in the overflow to my Grid,

Currently the overflow on my grid looks like the below,

I have been able to add an Update button which updates the rows and then refreshes but I need a way of deleting a Country of Origin if the option is no longer required.

Any ideas on how this can be achieved?