User permissions per Dashboard

Hi Team, trying to add existing users to organisations. But after re-login all the new users added to corresponding organisations were getting wiped off. Tried with name/id/e-mail of ldap. It’s adding but clearing right after re-login.
Tried with UI, API & DB as well. Is there something we need to look at LDAP ?
By default users are mapped to Org-1. We want to map users to particular org’s instead of all.

If you use ldap you have to specify what orgs users should get access to in ldap toml config file.
http://docs.grafana.org/installation/ldap/#mappings