How to create dynamic checkboxes inside a gridview

I have a GridView that displays the approvers list. As shown in below image. I need to show checkboxes if there are multiple approvers in a column. Is it possible? If yes then how can i achieve it?

E.g The Approvers section has multiple Approver Names in the first row, for which i should show checkboxes.

The data displayed in the grid is available in a DataTable and the multiple approvers are part of a single row hence i cant use TemplateField and display checkboxes.

Kindly suggest.