Portuguese Division Facility Ratings.
The controllers must have the minimum level as shown here below in the Facility Rating Assignment (FRA) list.
Please keep in mind that the active FRA's may be changed at any time for a single event or for a couple of days.
Language used in Portugal
If the controller OR the pilot speaks English only, both of them have to speak English.
If the controller AND the pilot are able to speak native language of the area (Portuguese), they can use it for the ATC commands.