As Dan says, Dorico uses master pages to show bits of information on different places on the page. Here’s a diagram showing the common key ones and what they are:
- Project title - this is on the First master page
- Flow heading - this is shown above the first system of the flow, and you can hide/show them in Layout Options; you can edit them from the panel on the right in Engrave mode
- Composer - this is also on the First master page
- Running header - this is on the Default master page (the template used for the 2nd page of music onwards) and shows the flow title, not the project title; this means if your project contains multiple flows, it always refers to the flow on that page.
They all use tokens to refer to information in the Project Info dialog.
To change information on the 1st page, you can edit the First master page and/or the relevant flow heading, and/or hide flow headings. For the 2nd page onwards, edit the Default master page. For one-off changes (if you want a few pages to be different, without changing everything else) create new master pages and assign them to the required pages.