Find the file "support_staff" in this map C:\Program Files (x86)\Steam\steamapps\common\Football Manager 2023\data\database\db\2300\edt\permanent
Open with notepad or something similar. I use Notepad++
Kredit - Riz Remes:
"The data for the "FUTURE_REGEN" command can be found in that link posted above, but there is another command for "DETAILED_FUTURE_REGEN" with some extra fields for more detail.
EDIT: Here's the usage:
"DETAILED_FUTURE_REGEN" "First Name" "Common Name" "Last Name" "Birth date(dd/mm/yyyy)" "Nation (first nationality)" "Favourite Team" "Ethnicity" "Skin Tone" "Hair Colour" "Height (in cm)" "Weight (in kg)" "Preferred Foot" "Preferred Position" "Favourite Number" "Birth City" "Current Ability" "Potentialt Ability" "Club newgen go to"
Everything else should be self-explanatory, but here are the values that can be used for Ethnicity, Skin Tone, Hair Colour, Preferred Foot and Position:
Ethnicity:
Unknown/random = -1
Northern europe = 0
Mediterrean/hispanic = 1
North african/middle eastern = 2,
African/caribbean = 3,
Asian = 4,
South east asian = 5,
Pacific islander = 6,
Native american = 7,
Native australian = 8,
Mixed race white/black = 9
East asian = 10
Skin tone:
a value of 1-20, with 1 being the lightest and 20 being the darkest
Hair colour:
Unknown/random = 0,
Blond = 1,
Light brown = 2,
Dark brown = 3,
Red = 4,
Black = 5,
Grey = 6,
Bald = 7
Preferred foot:
Right only = 0,
Left only = 1,
Right preferred = 2,
Left preferred = 3,
Both = 4
Positions:
GOALKEEPER, DEFENDER_LEFT_SIDE, DEFENDER_RIGHT_SIDE, DEFENDER_CENTRAL, MIDFIELDER_LEFT_SIDE, MIDFIELDER_RIGHT_SIDE, MIDFIELDER_CENTRAL, ATTACKING_MIDFIELDER_LEFT_SIDE, ATTACKING_MIDFIELDER_RIGHT_SIDE, ATTACKING_MIDFIELDER_CENTRAL, ATTACKER_CENTRAL"
Club: Club ID in-game