How can the administrator view or modify any user's profile?
By default, whenever a user is created in Joomla, the user record will also be created in JV-LD. Administrator can login and visit the Users section from JV-LD Menu to the left hand side of the dashboard.
In the subsequent screen all users will be listed. Administrator can edit any user by clicking on the display name, and he will be given a form to edit the user info.