Posting
Open Social studio on your phone (add it to your home screen). Record up to two minutes, and a LinkedIn post is written for you. Edit it, ask for changes, add a photo, then press Approve & post.
Tagging people
Mention a name in your note and it becomes a tag if they are in your contacts with a LinkedIn ID. Unsure tags are highlighted after recording — tap to pick the right contact or keep it as a plain name.
Contacts
Add people and company pages under Contacts. To find someone's LinkedIn ID, paste a snippet of their profile's page source into the helper and it is filled in for you.
If LinkedIn says the connection has expired, reconnect it and try again.