Just name the tab contains the word “MAIN” (like “Main Menu”), it will show up as the default tab in the POS window.
If you have multiple tabs set up for quick launch buttons, you can create a button to automatically select a specific tab by using the option: {TabPage}TabPageName where “TabPageName” is the name of the tab you want to access. For example: {TabPage}Babys will switch to the “Babys” tab.