Using son/sa/ses to express possession with personne/tout le monde/chacun/il faut (French Possessive Adjectives)

In French, you use the possessive adjectives son / sa / ses when you are using an indefinite pronoun, such as everyone,  nobody ...

Learn when to use the possessive adjectives son / sa/ ses in French

Look at these examples:

Note that when expressing possession with indefinite pronouns (personne, tout le monde, chacun/e) and impersonal expressions such as il faut, you will use the possessive adjectives son, sa or ses (its/one's here).

Remember that possessive adjectives agree in gender and number with the *owned* item (son billet / sa carte / ses parents).
See Common mistakes with mon/ma/mes, ton/ta/tes and son/sa/ses (French Possessive Adjectives) 

ATTENTION: You never use notre/nos (our), nor votre/vos (your)