If you want any amount of data in a single cell, you can create a static or staticfield cell (the first for single line and second for any number of lines). For example, you could have
cell staticfield
set width -1
text @ADDR&return
text @CITY&", "&@STAE&return
text @CTRY
sizetofit
Here you can format any way you want and the "sizetofit" command makes sure all rows fit in the field. Each new "text" command appends that text to the cell. As written, this cell will not change if you edit the address (etc.) in a separate editing field. If that does not matter in your new format you are done. If you need live updating too, an uncommon command can do it, which is to set "watch expression" on the cell. I added that feature for just such an application, but it turns out it is almost never needed. Here you should be able to watch all those separate expressions, such
set watch @ADDR
set watch @CITY
set watch @STAE
set watch @CTRY
set autoreload yes
and be able to get live updating. Let me know if you need it and have trouble and I could provide more details. The only place it is used in the "Default Format" is in the "PLAC Editing" template where it is used to update the icon that links to the place record if that records adds a URL link.
in brief - displaying any amount of data is trivial but having that data track changes, if needed, take extra work. As an extreme example, try loading the "Wiki Genealogy Format" which has whole paragraphs of text in a single cell that has collected data from numerous expressions access data in multiple record.
John