course bundle and subsection with courses

Hey,

I got 4 certification levels (course bundles) with different modules (courses) under it. Having the courses mapped just in when they were published and the other structuring options that are there do not make sense. In fact, it makes it a big mess on the courses page (especially if some courses are not published just after the level that they are supposed to be under). So I would like to structure it for clarity. Hence, I would like to make the course page to look as follows:

course bundle (big, parallex)
the 3, 4, or 5 courses that include it under it (in sections next to each other)

so it would look like:

|course bundle 1|
| 1 | 2 | 3 | 4 |

| bundle 2         |
| 1 | 2 | 3 | 4 | 5|

| bundle 3  |
| 1 | 2 | 3 |

| bundle 4  |
| 1 | 2 | 3 |

How can I do this? Do you have some code for it?

I cannot figure it out somehow, thanks for your help!

Also, a complicating factor is that I have customizer ID so cannot link to them even if I would build the page from scratch. And also, I do not want to enable the ascending options as it complicates the website. I just want the static page with the order determined.

Another two questions:

1. I would also like to change the link name to the course page, instead of courses something like modules or certifications or getcertified, how do I do that?

2. How and where can I change the page ID so to change the order (as a last and temporary resort for now)?

This issue has taken me already a few days (and the theme builder does refer to you) so help would be highly appreciated! Thanks for your help!

The page I need help with: [log in to see the link]