-- A method for welding together two parts along a weld line using a welding system enabling an operator to remotely perform welding operations. The operator defines reference points on the parts to be welded and/or on the weld line to be followed. A general movement direction of the welding torch is defined from the reference points. A local frame of reference is defined relative to the general movement direction of the welding torch. The welding torch is automatically moved from a welding starting point in the general movement direction. A flow of movement instructions linked to actions of the operator on the human-machine interface is generated to move the welding torch away from the general movement direction to adapt a trajectory of the welding torch to an actual shape of the weld line. The welding torch is moved corresponding to the flow of instructions generated by the human-machine interface.