Field help (LABWST) 

A labor work center can be associated with the machine-type or labor-type main work center. The labor work center times are calculated using two coefficients:

When creating a routing operation, the site attached to the work center must be the same as the site dedicated to the routing code, provided that the latter site is mentioned.

SEEINFO This resource is considered as secondary and always available (or available at the same time as the main work center). Its load is managed for information purposes via coefficients applied to the main work center times.

If the main work center is of sub-contracting type, no secondary work center can be associated.