OK I found this solution:
1) It is not necessary to modify the file templateDetails.xml. You can create a module and set manually a position name, even if it does not exist into le list. Simply write the position name you like and press enter. It will be taken by joomla.
2) Create tests modules JA JCM - Hero Style 1 with only one image (I doubt slideshow may have sense here and anyway it could create many formatting issues). Set spacing top and spacig bottom as you like (i used small size)
3) into Layout Settings of your template style (in my case both logistics and business for now), create a new ROW (I placed under the slideshow)
2) Into row Options, set it as "Fluid" than add wanted columns (I used 4 columns and I noticed that if a column will no be used, the row will enlarge the used columns - ie it will became 3 columns or less).
** NOTE: here I found a possible bug into the template: It is not possible to set a width for columns, they are auto and it is not possible to change. I hope @saguaros or someone else may clarify.
3) Modify each column setting as: content type="module position" - name of the module position = use the drop down, here you find the fake module position you wrote into your module - style = "t4section" (here you can test, i prefer how it looks in this way) - extra class = VERY IMPORTANT! here you have to write a CUSTOM-CLASS we use later.
4) Now you have to add some things as custom CSS, because Hero style 1 is made for slideshow section and Joomlart does not include some customization field (Please JA team do it!)
`/* #################### - HOME BOX CUSTOMIZATION - #################### */
/* HEIGHT HOME BOX --- /
.CUSTOM-HOMEBOX .acm-hero.style-1 .has-bg .hero-content {
min-height: 20rem;
}
/ ------------------------------------- */
/* WIDTH HOME BOX --- */
@media (min-width: 1400px) {
.CUSTOM-HOMEBOX .col-xxl-5 {
width: 95.00%;
} }
.CUSTOM-HOMEBOX .col-xxl-5 {
width: 100.00%;
}
/* ------------------------------------- */
.CUSTOM-HOMEBOX .acm-hero.style-1 .has-bg .hero-content h1 {
font-family:"Public Sans";
font-weight: 500;
font-style: normal;
/* font-size: calc(0.5rem + 1.5vw); TEST TO DO */
font-size:xx-large;
color:pink ;
text-shadow: -1px -1px 0 #000,
0px -1px 0 #000,
1px -1px 0 #000,
1px 0px 0 #000,
1px 1px 0 #000,
0px 1px 0 #000,
-1px 1px 0 #000,
-1px 0px 0 #000;
}
/* DESCRIPTIVE TEXT - HOME BOX */
.CUSTOM-HOMEBOX .acm-hero.style-1 .has-bg .hero-content .lead {
color:chartreuse;
text-shadow: -1px -1px 0 #000,
0px -1px 0 #000,
1px -1px 0 #000,
1px 0px 0 #000,
1px 1px 0 #000,
0px 1px 0 #000,
-1px 1px 0 #000,
-1px 0px 0 #000;
}`
It seems to works, but I'm not sure it will be perfectly responsive. I hope someone from the JA team will answer and help