The module requires POS manager's permission, which can be attained by entering PIN prior the usage of the journal.
To get an assistance on this module contact us by email ➡️ help@itpp.dev
Odoo Apps Store: https://apps.odoo.com/apps/modules/11.0/pos_journal_pin/
Notifications on updates: via Atom, by Email
Tested on Odoo 11.0