The Open Company and Open Previous Company menu commands provides access to previously created companies. (Use the New Company command to set up a new company.)
Select the name of the company you want to open from the Company Name list, and select OK.
If a company name is not listed, click the Browse button to locate and select the company you want to open.
From the File menu, select Open Company. If prompted, choose whether you want to keep the current company open or not. Sage 50 displays the Open Company window.
If you are using Sage 50 Pro Accounting and you already have a company open when you open another company, Sage 50 will close the current company when you open the new one. (This only closes the company window in Sage 50; it does not close the accounting period or year.)