apostrophe help: each others notes

[montenana]

multiple others...

"allow team members to edit each others notes"

is it:
each other's notes

or
each others' notes

TIA

"...each other's" ,since each is singular.

Or "allow each team member to edit others' notes"

Other's

Wot they sed

However many people, the phrase is always "each other" so it has to be "each other's notes". Singular or plural irrelevant.

a ha thank you so much!