Field help (STG2HABTRG) 

The Category, Company, Site, Target job type, Position, Population and Authorization fields are multiple-valued fields. The field becomes green when it contains a multiple selection.
If the field does not have a multiple value, you can click the Selection icon.Otherwise, modify the selection by clicking Multiple values.

Moreover, at the end of the training course, the authorizations defined as targeted in the training period can be updated in the records of the employees registered for the sessions.