So I'm thinking if it's Pedants' corner it should be Toddlers' Group...is that right?

[tassisssss]

Have been pondering for some time whether there should be an apostrophe in Toddlers' Group...

TIA!

at "grup"

I understand that if it is plural the apostrophe goes after the s, i.e. toddlers' group.

Please help me out on a similar point, if it is singular but ends in an s then what happens. E.g. is it James' toys or James's toys.

For singula nouns ending in an s - to make the possessive both James' toys and James's toys are accepted as correct (think of St James's Court)