Hi guys,
I am working on the trailhead Lightning Experience Chatter Basics/Getting Started with Chatter (https://trailhead.salesforce.com/lex_implementation_chatter/lex_implementation_chatter_intro).
In the section to customise Group Layout they mentioned that we can add a Salesforce1 action called "New Group Member".
I tried several time but impossible to find this action.
Any help ?
Thanks

Navigating Setup Unit
https://youtu.be/uM9Nli7xpEM
Can this be seen in a different way or marked not private?
Thank you.

I do not see any option on the page, however the challenge section says that 'This unit doesn't have a challenge. You can still earn points by marking the unit as read. Good job!' 
This is for Creating and Customizing Lightning Apps trail.

Hi guys,
I am working on the trailhead Lightning Experience Chatter Basics/Getting Started with Chatter (https://trailhead.salesforce.com/lex_implementation_chatter/lex_implementation_chatter_intro).
In the section to customise Group Layout they mentioned that we can add a Salesforce1 action called "New Group Member".
I tried several time but impossible to find this action.
Any help ?
Thanks

Navigating Setup Unit
https://youtu.be/uM9Nli7xpEM
Can this be seen in a different way or marked not private?
Thank you.

I do not see any option on the page, however the challenge section says that 'This unit doesn't have a challenge. You can still earn points by marking the unit as read. Good job!' 
This is for Creating and Customizing Lightning Apps trail.