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Please refer to ESRI’s background information on Named User Licenses via the my.esric arcgis.com website:
https://pro.arcgis.com/en/pro-app/get-started/named-user-licenses.htm
Creating Members and Assigning Licenses:
The person creating the user accounts must have “Creator” rights on my.esri.com
The creator logs in to my.esri.com
Now follow the instructions on the arcgis.com website:
https://pro.arcgis.com/en/pro-app/get-started/set-up-an-arcgis-online-organization.htm
The new member instructions about 2/3 of the way down the page.Do not email the new members as part of the process. Provide the information to the new member directly or provide the information to the course instructor.
Whenever possible, import the new members via a CSV file.
Assign the licenses per the instructions on the arcgis.com website:
https://pro.arcgis.com/en/pro-app/get-started/assign-named-user-licenses-in-arcgis-online.htmAssign the AcrGIS Pro program.
Assign all extensions as well.
Managing Members
Please refer to this link for the arcgis.com website to change or remove members:
https://doc.arcgis.com/en/arcgis-online/administer/manage-members.htmLicenses are removed or changed on the arcgis.com website page:
https://pro.arcgis.com/en/pro-app/get-started/assign-named-user-licenses-in-arcgis-online.htm
These instructions are located toward the bottom of the page.