Method for defining a process in a liquid handling system and a method for carrying out a pipetting process

A method for defining an automated pipetting process which is to be carried out in a liquid handling system (100), wherein the liquid handling system (100) comprises

• an outlet element (5) for aspirating and/or dispensing a liquid volume (x) in an automated pipetting process,
• a numerically controlled movement apparatus (50) for carrying out movements (P1, P2, P3) in connection with the pipetting process,
• a controller (S) for controlling the movement apparatus (50) and the pipetting process,
• a graphic user interface (80) for displaying and/or defining parameters for carrying out a pipetting process, and
• a set of parameters using which the controller (S) controls a defined pipetting process, wherein parameters of this parameter set are to be defined directly by a user using the graphic user interface (80),
• characterized in that at least one formula is provided in the graphic user interface (80), said formula being configured to bring at least a first parameter (f(x)), which is to be directly defined by a user, into a functional dependency from a second parameter (x), which is also to be defined directly by a user,
• so that the first parameter (f(x)) is—instead of being to be defined by a user—adjusted automatically by the system if the second parameter (x) changes,
• wherein a sigmoid function is used as said formula.