How do I add an existing iCloud plus from another family member to my phone storage via phone or mac

How do i add an existing iCloud plus to another family member

my wife would like to add me to her iCloud plus

Who is doing what to whom here? ;-)

Add a family member to your shared subscriptions - Apple Support

- You can share many subscriptions from Apple, like Apple TV+ and Apple Fitness+, with your family.

- "When you share subscriptions like Apple Music, Apple Fitness+, or Apple TV+, each person sees their own preferences and recommendations — not the whole family’s. And when you share an iCloud storage plan, family members can't see each others’ photos, files, or documents."

- How to add a family member to your subscription from Apple

1. Open the Settings app.

2. Tap your name, then tap Family Sharing.

3. Tap Set Up Your Family, then follow the onscreen instructions and invite your family members.

Already set up Family Sharing? If yes, see this section of the article Add a family member to your shared subscriptions - Apple Support

4. Eligible subscriptions are automatically shared with your family members.

Hi @Eli1962

Simply ask the family member to add your apple email id ( iCloud id ).

You will be automatically join their family as @Limnos mentioned in reply.

Once synced with your family account, your storage could also be stored to the family members along with family storage too.

On joining a family, you could not join another family within a year once you decided to come out.

Thanks & Regards,

Sudhakar A.

[Edited by Moderator]