i wish know how to restrict the user to log EM in some phones or one phone only,
for example: one user can only login at one phone.
no, but the users will take the configuration from the particular site. there is no workaround to what you want (limit who can and who cannot log in a phone)
that would require the change of the whole way EM works right now. Reach you AM and ask if you can open a PER
if this helps, please rate