Adults are statted similar to Juves:
They have the same Stats, except theirs are between 2 and 10. Some go higher via the use of cybernetics (particularly body and reflexes). Their empathy will probably be lower due to the Humanity Cost of any Cybernetics.
Adults have a different set of skills. These are more specialised than juve skills, and so work better for the field they are in (e.g. usually have lower difficulty or in conflicts the juve skill will be halved). For example the Juve Skill Streetfighting covers the adult skills of Hand To Hand, Melee and Ranged Weapons. There are also adult skills that are not covered at all by juve skills: e.g. Heavy Weapons.
Instead of a Yogang, Adults have a Character class which is their broad profession and gives a class special ability:
Solo : the Hired Killers of the 21st century. Soldiers, strike teams, and street Samuari are built as Solos. Their special ability is Combat Sense which is added to their initative and combat-related awareness rolls. (e.g. they usually go first and are good at spotting ambushes!)
Media/Rockerboy : Renegade reporters and rockers (A rock star is a muscian who has sold out to the corps, a rockerboy/girl is one who remains independant). Their special ability is Spotlight, which is their ability to hold a crowds attention.
Techie/Medtechie : It’s a grown up tinkertot, for mechanics or flesh depending. Their special ability is Jury Rig / Medtech which is used to either wire crazy stuff together until it works, or patch you up when it doesn't depending. Most lab-technicians / scientists etc… will use the techie build.
Cop : The people who keep the peace. The Cop template will apply to police, investigators, many agents and BuReloc. Their special ability is Authority, as in their Authority over you, be it convincing a group of juves to pack it in and come quietly or staring down a mobster. The most direct use of this skill is it is added to all facedowns and intimidate rolls.
Corporate/Corpzoner : “The Man” the people in charge who are pulling the strings, this may be a literal corporate employed by a megacorp, or people in government. President Whindam is statted as a corporate. Their special ability is resources, which is a measure of how much stuff they have access to from their parent organisation be it money, equipment, facilities or back ops hit squads.
Netrunner : Those crazy people who run the information superhighway, jacking their mind into the net and either ransacking or protecting the vast dataforts of servers there. AIM Overwatch and renegade netrunners use this template. Their special ability is Interface, with among other things behaves like a Solos Combat Sense in the net.
It is possible for adults to “multiclass” as they get older and particularly change careers. The most common would be <anything> to Corporate as they climb the greasy corporate pole and move into management. However, every point of your new special ability come at the expense of 1 point of your old one. The special abilities represent the focus of your profession – if you are not honing them on the edge, you lose them.