Promarker, Copic & Finecolour markers all use alcohol based ink, therefore the blenders should work interchangeably between the brands without any foreseen problems. Some brands may have a higher/lesser ratio of solvent in their blenders, therefore you may have to apply more blending where necessary.
As you probably know, blenders don't actually blend ...
I could not find an "automatic" method, but I did find a method that could help.
Select the pages you want to define as one section.
Right-Click > Numbering and Section Options
In the "Section Marker" box (not "Section Prefix") type in "1 - " (I added spaces before and after the hyphen).
Repeat for each following section, changing the "Section Marker" to ...
InDesign has built-in Table of Contents functionality that is based on using a particular paragraph style for all of the elements that you want to include in the TOC (or Index). Your best bet is to take a look at their documentation for creating a Table of Contents. You can find it on the Adobe website here.
Option 1: Use the 'Pattern along Path' LPE (or the corresponding extension - description is for LPE)
Make your design (a dash and a number, or maybe a second dash, too)
convert those to a path (you might need 'stroke to path' for the dash), and combine them to a single path
copy that to clipboard
select the rectangle
apply the LPE to it: Path > Path effects ...
I, personally, don't know any place that merely list sections.
However, you might find document navigation easier utilizing the little navigator in the lower left corner of the Document Window.
If you click the down arrow, you can see a list of pages, Sections can be easily "jumped" to by merely selecting the differing page numbers, assuming they vary.
I sometimes do exactly what @Lauren Ipsum suggested.
Another option is to add the repeating text (set using a style that is not included in the TOC) to the master page, so that it appears on each page. Then create a text box at the top of the page where that section begins--so that it will appear in the correct place in the TOC, and then type the Section ...