A method for automatically setting a variable boom position (MS) of an adjustable distributor boom of a building material pump apparatus and/or thick matter pump apparatus , wherein at least one same tip position (SPO) of a boom tip of the distributor boom can be achieved by different boom positions (MS, MS'), wherein the method has the step of: - determining and setting, by a setting device , a boom position (MS) depending on a predefined variable (VG) ascertaining a tip position (SPO) and on the basis of an optimization criterion (OK), wherein the optimization criterion (OK) is a minimized tilting moment (KM) of the distributor boom with respect to a support system of the building material pump apparatus and/or thick matter pump apparatus , wherein the tilting moment (KM) depends on the boom position (MS), characterized in that - the step comprises: determining and setting, by the setting device , a change (VMS) starting from an actual boom position (IMS) on the basis of an, in particular greatest, minimization starting from an actual tilting moment (IKM) of the distributor boom with respect to the support system , wherein the actual tilting moment (IKM) depends on the actual boom position (IMS), - wherein the step comprises: controlling, in particular regulating, by the setting device , the boom position (MS) for achieving and/or maintaining of the tip position (SPO), in particular starting from the actual tip position (ISPO) of the distributor boom and/or during the determining and the setting of the change (VMS) and/or as long as the actual tilting moment (IKM) is minimized, and - wherein the step comprises: determining and setting, by the setting device , the change (VMS) and controlling, in particular regulating, the boom position (MS) by determining a solution (LS) for a kinematic relationship (KIZ) between minimizing the actual tilting moment (IKM) and achieving and/or maintaining the tip position (SPO). - determining and setting, by a setting device , a boom position (MS) depending on a predefined variable (VG) ascertaining a tip position (SPO) and on the basis of an optimization criterion (OK), wherein the optimization criterion (OK) is a minimized tilting moment (KM) of the distributor boom with respect to a support system of the building material pump apparatus and/or thick matter pump apparatus , wherein the tilting moment (KM) depends on the boom position (MS), characterized in that - the step comprises: determining and setting, by the setting device , a change (VMS) starting from an actual boom position (IMS) on the basis of an, in particular greatest, minimization starting from an actual tilting moment (IKM) of the distributor boom with respect to the support system , wherein the actual tilting moment (IKM) depends on the actual boom position (IMS), - wherein the step comprises: controlling, in particular regulating, by the setting device , the boom position (MS) for achieving and/or maintaining of the tip position (SPO), in particular starting from the actual tip position (ISPO) of the distributor boom and/or during the determining and the setting of the change (VMS) and/or as long as the actual tilting moment (IKM) is minimized, and - wherein the step comprises: determining and setting, by the setting device , the change (VMS) and controlling, in particular regulating, the boom position (MS) by determining a solution (LS) for a kinematic relationship (KIZ) between minimizing the actual tilting moment (IKM) and achieving and/or maintaining the tip position (SPO). <EOS>