Each file type has its own customizable QuickInsert group. This group allows you to insert special characters, insert custom tags or format text in the target document.
Note: SDL Studio has multiple different copies of file type settings. Before you customize the QuickInsert group, you need to identify the appropriate settings. See Finding the Right Set of File Type Options.
Depending on which file type you work with, a set of QuickInsert items that come with Studio may already be available to use on the QuickInsert group. For example, with Microsoft Word, bold 
is always available for use on the group.You can also add or change your own custom buttons. You may want to add a button so that you can quickly insert text, such as a company name or special characters, or to apply custom formatting.
You can create nine custom QuickInsert buttons for each file type. These custom QuickInsert buttons will appear in the Editor view > Home tab > QuickInsert group next to the default buttons for each file type.