When I'm using a column with the checkbox type in a grid with a group, the lines with summary are also showing a checkbox, but I would like it to show only in the normal lines.
I already try to remove it, but I don't know what I'm doing wrong.
Setting a checkbox at column level will add the checkbox in each cell. If you don't want this, you'll have to manually add checkboxes with AddCheckBox call programmatically.