To create a new user which syncs across all VMs in the tenancy, you need to create it inside the LDAP.
There are two ways to do it:
Run the Create a new LDAP user inside Morpheus
Head over to the Provisioning tab in Morpheus and click your LDAP instance.
Select Actions > Run Workflow > Create a new LDAP user.
Fill in the values, and do note that the public SSH key is mandatory. Below is a screenshot of a correctly filled workflow.
Fill all mandatory information: FIRST NAME, LAST NAME, USERNAME, PUBLIC SSH KEY AND INITIAL PASSWORD.
The user will be prompted to change their password upon first login after successful creation and the minimum lifetime of password is set to 1 hour.
Note: Created users cannot be automatically added to the sudoers group for security reasons. However, you can grant sudo privileges manually from cli or web browser interface
Create a new user by accessing the LDAP itself
To create a user manually (this might be needed if you need to customize access to VMs, reset passwords, etc.) you can follow the guide at: EUMETSAT tenancy: Default setup or the last steps in Deploy FreeIPA LDAP and internal DNS service.