3 answers
Did you ever figure something out for this Laurie? From all the work I've done on this, it doesn't seem like it's possible. User Permissions Needed Hi Laurie
create libraries: Manage Salesforce CRM Content
OR
Create Libraries
To add members to a library: Manage Salesforce CRM Content
OR
Manage Library checked in your library permission definition
To assign library permissions to members: Manage Salesforce CRM Content
OR
Manage Library checked in your library permission definition
Try follwing the instructions in the article below. This should help.
https://help.salesforce.com/articleView?id=content_workspace_perm.htm&type=5