I'm glad I could help.

Note that if you want to enable the Select All X Instances feature with any blank document, you'll have to select "New documents based on this template" in the Style Pane Options dialog box before clicking OK.

For what it's worth, select All X Instances can be used with true styles as well (that is, with entries in the Styles pane that don't represent formatting or a style + formatting), but usually that shouldn't be necessary, as you can modify the style directly.

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Stefan Blom
Microsoft Word MVP

Microsoft 365 apps for business
Windows 11 Professional