Backed up the previous version (pat 1.5.1), rename the pat folder into pat_03022022_1523 then proceed to deploy changes using git on the server by cloning it. Dump the pat database and alter the m_business_units table to add the manager_id fields. then tested the new version deployed, as per checking, all is OK. Copied the new version in the 11.128 repositories for a backup then changed the log.