Dimension → Account → Hierarchies → simply drag & drop to configure its structure. (Mandatory, account structure is crucial to verify numbers with your ERP system.)

Dimension → Account → Hierarchies → Verify BalanceSheet structure and IncomeStatement structure

Other GL segments (highlighted in red box above) → Hierarchies → simply drag & drop to configure their structures (Optional)

Please CheckOut first. After editing, remember to Save & CheckIn.