The plural possessive is skiers'.
If the plural form ends in an 's' then you simply add an apostrophe to make it a plural possessive. If the plural does not end in an 's' then you should add an apostrophe then an 's' to make it possessive.
The plural of skier is skiers.
The possessive form of the noun skier is skier's.Example: The wind is really strong. The skier's hat flew off his head.
Singular possessive: secretary's Plural: secretaries Plural possessive: secretaries'
The plural is relatives. The plural possessive is relatives'.
The plural is lads. The plural possessive is lads'.
The plural form is Mexicans. The plural possessive is Mexicans'.
The plural form is echoes. The plural possessive is echoes'.
The plural form is suffixes. The plural possessive is suffixes'.
The plural form is stepsisters. The plural possessive is stepsisters'.
The plural form is inches. The plural possessive is inches'.
The plural possessive of "Father" is, "Fathers"
Studies' is the plural possessive of study.