MarcT

The ideas from @ABC are interesting. But if you need margin notes and footnotes on the same page, how would it work ?
I'm a bit skeptical about this need to impose a style of notes from the start.
In any case, I think it should have a panel listing all of the notes in the document ... much like the Index panel. This would provide an overview of all the notes. For example :
Page 12 :
(1) : Description of note 1 (2) : Description of note 2 (3) : Description of note 3 Page 15 :
(1) : Description of note 1 Page 23 :
(1) : Description of note 1 (2) : Description of note 2 (3) : Description of note 3 By clicking on the page number or on a particular note, the user would be redirected to the page / note in question.

Very good idea.
Please don't link the footnotes to a specific block of text as in Adobe Indesign.
Footnotes should be free. We must be able to position them anywhere in the document. See @julienkinkin.
Bye.

I'm using Affinity Publisher on a 13'3 inch Apple MacBook AIR.
Unfortunately, the number of icons I can display on my application is limited.
So, I can't display tools like "Distribute", "Geometry", etc.
Why not reduce these options to a single icon - and display a submenu - to free up more space.
For example, like this:

Changer by :
with closed submenu:
with opened submenu :
What do you think?
Goodbye.

It should be done as for linked text frames. By having a visual difference (ex: using dotted lines instead of a solid line, as is currently the case for linked text frames) ?

Very good idea.
Please don't link the footnotes to a specific block of text as in Adobe Indesign.
Footnotes should be free. We must be able to position them anywhere in the document. See @julienkinkin.
Bye.