A method for determining the maximum number of constant tables at table locations in one or more pick-and-place lines for the placement of components on assemblies with the aid of pick-and-place machines, wherein the fittings on the constant tables are used in all the fitting families of a pick-and-place line, wherein a fitting family comprises a set of assemblies which can be produced on a pick-and-place line with a common component fitting, wherein the maximum number of constant tables is determined by means of calculation with the aid of mixed integer linear optimization on the basis of input data describing the pick-and-place infrastructure, wherein the pick-and-place infrastructure can comprise in particular the pick-and-place lines having the pick-and-place machines, each having pick-and-place heads, at least one transport system for the assemblies, said constant tables and further tables which can be variably fitted.