In the workerpool-creationTable you set only the total number of worker. The table with the skills you need as a data-source in the frame in Plant Simulation (e.g. insert a TableFile in your frame --> in the Table dialog: File open --> select your excel-file).
Insert a user defined attribut in the worker in the class library (name skills, type table). Activate the row index and format the first column as integer. Add also an user defined attribute for the identifyer of the worker (e.g. ident, data type string).
Than you can copy the skills and the ident from the tablefile into the user defined attributes of the individual worker (for each worker one row, ...).