@
loviedovie - I think you'll need to use a program mode template to populate a custom column, of type '
Column built from other columns', see ==>>
The calibre template language
In particular see these functions ==>>
list_item(val, index, separator) and
strcat(a, b, ...).
You might find something similar in here ==>>
Plugboard, template, and custom composite column recipes
Curious - why do you want to put the Tags in Comments ?
BR