Dear @lubos
Is there any roadmap on this request?
This is already requested in a earlier post, Setup default system language for each user, which was requested in Dec. 2015.
@sainrex, @koval, @aspenforest, @mehdi
This feature is build-in other web-based accounting (Openbravo, Front Accounting, Compiere, NolaPro) and non-webbased (TurboCash and GNUCash).