[PetBest]

Device is Kobo Libra.
I use Auto management and the kobotouchExtended plugin on Calibre 7.26.0
I added a custom column named Lookup name: collections with type: text columns shown in the Tag browser
In the browser you see #collections when you hoover with the mouse over the header.

Tab File Formats
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kepub to cbr are checked
Read metadata from files on device: checked
Use sub-folders: checked
Save template: default {author_sort}/{title} - {authors}

Tab collections, covers & uploads
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Collections: checked
Collections columns: checked (I had a field entry that was empty and that worked for me. I tested also okay with #collections as my column field name is #collections)
Create Collections: checked
Delete empty Collections: checked
Use Kobo viewer for EPUB books: checked
Do not treat replacements as new books: checked

Tab Metadata, on device and advanced
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Update metadata on the device: checked
Set series information: checked

Hyphenation and Modify CSS tabs are kept with the defaults