In Total War: Three Kingdoms, character are as much a resource as money, food, and influence are. Managing your characters, and having the right person in the right role, is very important.
As your faction grows, takes over new settlements and cities, obtains new Commanders, and new roles open up, you will need more and more characters to fill all the important roles within your society.
How To Recruit New Characters
By opening up the Court menu, you will be able to see all the characters that are currently in your faction. At the bottom of the screen, you can see your family members and generals, while to the right-hand side you can see all the characters that are available for recruitment.
You will also be able to see what roles the characters are currently assigned to by scrolling over them at the bottom of the screen.
To recruit a new character, scroll over the characters on the right and click on them. A pop-up will appear on the left-hand side of the screen. You will be able to see their class, position, special skills, and attributes. It is best to hire candidates that match up with what you plan on doing over the coming terms.
If you want to take on another Faction and fight for territory, then it may be wise to pick a strong fighter or military leader. If you plan on using the candidate to look after one of your towns or settlements, or to put them in an administrator position, then you want to pick the candidate that will offer the best benefits in that role.
This is also the screen that allows you to manage your characters. On the left-hand side, in the bottom corner, you will have the option to Banish or Promote, any character. You can also choose to release them from service, or request aid from them.
Banishing a character will lead to bad blood between you and that character, or might even lead to them causing an insurrection. Releasing a character from service will return them to the candidate pool, with no penalty. Request aid from a character will get you some money, but that character will take a large hit to their satisfaction level.