pos_multi_currency/security/ir.model.access.csv

id,name,model_id:id,group_id:id,perm_read,perm_write,perm_create,perm_unlink
access_pos_currency_line,pos.currency.line user,model_pos_currency_line,point_of_sale.group_pos_user,1,0,0,0
access_pos_currency_line2,pos.currency.line manager,model_pos_currency_line,point_of_sale.group_pos_manager,1,1,1,1