To consolidate the financial figures of all Branch Companies and present them as consolidated financial statements, you need to set up additional companies in SAP Business One, one per level of consolidation. The new "consolidation" company is used only for the purpose of consolidation and should be maintained by the parent company (Head Office).
The consolidation company must be set up like any other company in SAP Business One, with its own setups and chart of accounts.
Caution
Consolidation company should not be Multiple Branches enabled.
Next Step: Consolidation Setup in Intercompany Solution