A method for use a conveyor line interconnecting a cashier counter and a bagging counter, which cashier counter comprises a countertop in an assembly with a part of or the whole frame of the conveyor and which bagging counter, comprises a countertop integrated therewith a part of the conveyor's frame, said conveyor line comprising a conveyor linked to the cashier counter and equipped with a motor driving the cashier counter's conveyor belt, and a conveyor linked to the bagging counter and equipped with a motor (41 b) driving the bagging counter's conveyor belt, either one of said conveyors (4, 5) being a folding conveyor having a second end roll (41a, 51a) and said conveyors (4, 5) defining jointly a substantially continuous plane for the conveyor line, which plane extends from the cashier counter to the bagging counter, characterized in that the folding conveyor, which includes a pivoting end of the folding conveyor's frame, - the pivoting end of the folding conveyor's frame adjacent to the gateway is turned to an angle of about 45-140 degrees of about 70-110 degrees, preferably to an angle of about 90 degrees, upward from the conveyor line's plane, by pivoting the folding conveyor's frame about the hinge point (9; 9c) of the folding conveyor's frame while at least the motors driving the conveyor belts (43, 53) in operation but the driven motion of the folding conveyor being stopped because of belt slackening, thereby establishing a gateway between the conveyor linked to the cashier counter and the conveyor linked to the bagging counter - the pivoting end of the folding conveyor's frame adjacent to the gateway is turned from an angle of about 45-140 degrees, preferably from an angle of about 70-110 degrees from preferably from an angle of about 90 degrees, upward from the conveyor line's plane, to a parallel relationship with the conveyor line's plane about the hinge point (9; 9c) of the folding conveyor's frame while at least the motors driving the conveyor belts (43, 53) are in operation while the drive returns to the belt extending by way of a motor and the second end roll (41a, 51a), because the belt tightens; - the hinge point (9; 9c) divides the folding conveyor in two segments, such that only the pivoting end of the folding conveyor's frame is pivoted. - the pivoting end of the folding conveyor's frame adjacent to the gateway is turned to an angle of about 45-140 degrees of about 70-110 degrees, preferably to an angle of about 90 degrees, upward from the conveyor line's plane, by pivoting the folding conveyor's frame about the hinge point (9; 9c) of the folding conveyor's frame while at least the motors driving the conveyor belts (43, 53) in operation but the driven motion of the folding conveyor being stopped because of belt slackening, thereby establishing a gateway between the conveyor linked to the cashier counter and the conveyor linked to the bagging counter - the pivoting end of the folding conveyor's frame adjacent to the gateway is turned from an angle of about 45-140 degrees, preferably from an angle of about 70-110 degrees from preferably from an angle of about 90 degrees, upward from the conveyor line's plane, to a parallel relationship with the conveyor line's plane about the hinge point (9; 9c) of the folding conveyor's frame while at least the motors driving the conveyor belts (43, 53) are in operation while the drive returns to the belt extending by way of a motor and the second end roll (41a, 51a), because the belt tightens; - the hinge point (9; 9c) divides the folding conveyor in two segments, such that only the pivoting end of the folding conveyor's frame is pivoted.