You can send the document and the template to your clients, but note that this shouldn't be necessary. Clients don't need the template in order to use numbering properly, since the number formatting is copied from the template into the document upon creation.

Make sure that you set up numbering properly attached to paragraph styles and ask your clients to apply the appropriate styles whenever they want to change the numbering. See http://www.shaunakelly.com/word/numb...g20072010.html.

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Stefan Blom
Microsoft Word MVP

Microsoft 365 apps for business
Windows 11 Professional