As you need checkbox but behavior should as radio button that means at a time you can only select one checkbox, as per the best practice there should be only radio button but if you need as per your project requirement then I can suggest to apply validate rule in order to select only checkbox at a time.
If we apply validate rule it gives message only post submit. But here we have table rule in which one of the column is checkbox. If we select any one of the checkbox, checkbox of other rows should be disable. And if i de-select the selected checkbox then enable all checkbox. Suggest me if you have any other approach.