Computer- implemented method for determining a subset of assembly types in a predefined set of assembly types for a given fixed set-up of a given pick-and-place line and an associated modified fixed set-up, wherein the assemblies of the assembly types in the subset can only be partially populated with components in the predefined set of component types of the fixed set-up, wherein the component types, whose assignment of component types to tracks of the shuttle tables remains unchanged and whose components are kept ready for a predefined period of time on a predefined set of shuttle tables that can be attached to a pick-and-place line , form a predefined fixed set-up, having the following steps: - selecting at least one shuttle table from the predefined set of shuttle tables for replacing component types; - determining the subset of assembly types from the predefined set of assembly types; - ascertaining a set of rejectable component types which have been set up on the at least one selected shuttle table and are superfluous for populating the determined subset of assembly types; - ascertaining a set of necessary component types resulting from the predefined set of component types minus the set of rejectable component types; - ascertaining a set of additional component types that are required, together with the set of necessary component types, for completely populating the assemblies of the determined assembly types; - determining a modified fixed set-up in such a way that the rejectable component types are replaced by the additional component types and the necessary component types find space on the remaining shuttle tables in the predefined set of shuttle tables minus the at least one selected shuttle table; - outputting the determined subset of assembly types and the determined modified fixed set-up in a suitable form for controlling and/or regulating a complete population of the assemblies of the determined assembly types, characterized in that the rejectable component types are replaced by the additional component types by replacing the at least one shuttle table on the pick-and-place line with at least one other shuttle table which is previously set up only with components of the additional component types. - selecting at least one shuttle table from the predefined set of shuttle tables for replacing component types; - determining the subset of assembly types from the predefined set of assembly types; - ascertaining a set of rejectable component types which have been set up on the at least one selected shuttle table and are superfluous for populating the determined subset of assembly types; - ascertaining a set of necessary component types resulting from the predefined set of component types minus the set of rejectable component types; - ascertaining a set of additional component types that are required, together with the set of necessary component types, for completely populating the assemblies of the determined assembly types; - determining a modified fixed set-up in such a way that the rejectable component types are replaced by the additional component types and the necessary component types find space on the remaining shuttle tables in the predefined set of shuttle tables minus the at least one selected shuttle table; - outputting the determined subset of assembly types and the determined modified fixed set-up in a suitable form for controlling and/or regulating a complete population of the assemblies of the determined assembly types, characterized in that the rejectable component types are replaced by the additional component types by replacing the at least one shuttle table on the pick-and-place line with at least one other shuttle table which is previously set up only with components of the additional component types. <EOS>