The possessive is the standard form - playmate's - and the possessive of the plural can use only the apostrophe - playmates' - in accordance with standard usage.
The plural possessive form for the noun playmate is playmates'.
daughter's wedding
The word monkey is a common singular noun. It requires no apostrophe.The monkey liked his food.If the word monkey has a possession or belonging, it needs an apostrophe.The monkey's food sat uneaten.The plural is monkeys; plural possessive is monkeys', such as monkeys' food.
The plural of governor is governors (no apostrophe necessary). The plural possessive form of governor is governors'.
With the apostrophe after the final S, the word indicates a plural possessive. "The team of the boys" rather than "the team of the boy".
There are two occasions where an apostrophe would be used. Singular possessive: This is where you are referring to something belonging to one cat. The apostrophe comes before the 's'. For example, the cat's milk. Plural possessive: This is where you are referring to something belonging to more than one cat. The apostrophe comes after the 's'. For example, the cats' milk.
Firm's. Any singular possessive where the word does not end in 's' is apostrophe 's' ('s).
"Companies" is the plural "company" and doesn't require an apostrophe unless you are using a plural possessive. With the plural possessive, the apostrophe should appear at the end of the word after the 's'.
If janitors is simply a plural word, then it doesn't need an apostrophe. Janitor's is a singular possessive (Janitor's responsibilities). Janitors' is the plural possessive (Janitors' responsibilities).
You don't need an apostrophe in that sentence. Studentsis a plural word, not a possessive.
The apostrophe in "women's" should go between the "n" and the "s," making it possessive. So it becomes "women's."
The word Lilly is a noun. The form Lilly's is a possessive noun, showing that the coat belongs to Lilly.The word its (no apostrophe) is a pronoun, not a noun, a possessive adjective, placed before a noun to show that the noun belongs to it. For example:Please give the dog some water. Its bowl is empty.The word it's (with apostrophe) is a contraction, the short form for 'it is'. The contraction functions as the subject and verb (or auxiliary verb) of a sentence or a clause. For example:Let's go for a walk, it is such a nice day. Or, Let's go for a walk, it's such a nice day.
Mrs Debase. (no apostrophe) Mrs Debase's handbag. (Possessive apostrophe)
daughter's wedding
visitors---If you are using visitors as a plural of visitor, then you don't need an apostrophe.Visitor's (note apostrophe s) is a singular possessive. That is my visitor's luggage.Visitors' (note s apostrophe) is a plural possessive. This is the visitors' lounge.
The word monkey is a common singular noun. It requires no apostrophe.The monkey liked his food.If the word monkey has a possession or belonging, it needs an apostrophe.The monkey's food sat uneaten.The plural is monkeys; plural possessive is monkeys', such as monkeys' food.
The plural of governor is governors (no apostrophe necessary). The plural possessive form of governor is governors'.
Parents'......the apostrophe goes at the end of Parents because it is Plural Possessive.