Only commands can be added to the Quick Access Toolbar. You cannot display the Quick Access Toolbar on multiple lines. The only way to increase the size of the buttons is to lower the screen resolution you use. You cannot increase the size of the buttons representing the commands by an option in Microsoft Office.

You can move the Quick Access Toolbar from one of the two possible locations, and you can add buttons that represent commands to the Quick Access Toolbar. The Quick Access Toolbar is a customizable toolbar that contains a set of commands that are independent of the tab on the ribbon that is currently displayed. Excel for Microsoft 365 Word for Microsoft 365 Outlook for Microsoft 365 PowerPoint for Microsoft 365 Access for Microsoft 365 Project Online Desktop Client Publisher for Microsoft 365 Visio Plan 2 Excel 2021 Word 2021 Outlook 2021 PowerPoint 2021 Access 2021 Project Professional 2021 Project Standard 2021 Publisher 2021 Visio Professional 2021 Visio Standard 2021 OneNote 2021 Excel 2019 Word 2019 Outlook 2019 PowerPoint 2019 Access 2019 Project Professional 2019 Project Standard 2019 Publisher 2019 Visio Professional 2019 Visio Standard 2019 Excel 2016 Word 2016 Outlook 2016 PowerPoint 2016 Access 2016 Project Professional 2016 Project Standard 2016 Publisher 2016 Visio Professional 2016 Visio Standard 2016 OneNote 2016 Excel 2013 Word 2013 Outlook 2013 PowerPoint 2013 Access 2013 OneNote 2013 Project Professional 2013 Project Standard 2013 Publisher 2013 Visio Professional 2013 Visio 2013 SharePoint Designer 2010 Excel 2010 Word 2010 Outlook 2010 PowerPoint 2010 Access 2010 OneNote 2010 Project 2010 Project Standard 2010 Publisher 2010 Visio Premium 2010 Visio 2010 Visio Standard 2010 Office 2010 InfoPath 2010 InfoPath 2013 SharePoint Workspace 2010 More.

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