Either the team_control_point or it's cap area has a setting that allows you to say which control points each team needs to own before they can capture this one. If you remove them completely the point becomes uncaptureable, and if no team can capture all the points, the game shouldn't end. this, though makes the cp use the locked icon for the control point.
Each control point should have it's own index (not group index) number (0, 1, 2, 3, 4, etc.) and your cp master should have them lined up like <0,1,2,...etc>.