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in this video you will lean to Change Default Company in Tally | How to Set Default Company.
By setting default company one can save its time to open a company every time when Tally Opens.
Load Companies on Startup
In TallyPrime, you can choose one or more companies to open by default, without you having to select and open each time.
Press F1 (Help) - Settings - Startup.
The Startup Settings screen appear.
Set Load companies on startup to Yes.
Select Companies to load and press Enter.
Select the companies you want to load on startup.
If your company is not listed in the path that appears, you can select companies from other paths in your computer.
Select from Drive - browse to the path where your company data is stored and press Enter.
Select the Companies that you want to load.
Under Company Name, select End of List once you have selected the companies and press Enter.
The Startup Settings screen displays the number of companies you have selected (-3 selected- in this case).
Press Esc.
Next time you open TallyPrime, the companies that you had set to open on startup will be loaded automatically.