The word 'staff' is a singular, uncountable noun as a word for the people who work for a particular company, organization, or institution; employees as a group.
The noun 'staff' (the plural form is staffs) is a countable noun as a word for the set of lines on which music is written; a long stick used for making walking easier on rough terrain; a stick carried by officials on formal occasions; a flagpole.
Singular possessive: secretary's Plural: secretaries Plural possessive: secretaries'
The plural is lads. The plural possessive is lads'.
The plural is relatives. The plural possessive is relatives'.
The possessive form of the plural uncountable noun headquarters is headquarters'.example: The headquarters' staff will be here for training on Monday.
The plural form is suffixes. The plural possessive is suffixes'.
The plural form is stepsisters. The plural possessive is stepsisters'.
The plural form is Mexicans. The plural possessive is Mexicans'.
The plural form is echoes. The plural possessive is echoes'.
The plural form is inches. The plural possessive is inches'.
Studies' is the plural possessive of study.
The plural possessive is pals'.
Coaster's is singular possessive. The plural is coasters, the plural possessive is coasters'.