Hi @Hayles
If I’ve understood correctly, supplementary pages may be suitable.
This would allow you to set up templates and you could include tags here, such as @ClientName@ which will pre-fill the template with the details for you. It does require a bit of HTML knowledge (as the templates are in HTML), but we can point you in the right direction if needed.
There’s more on this here: Supplementary Pages
Let me know if that helps?