Collaboration question

I’ve installed Nextcloud in cPanel and would like to use it for doc collaboration with a coworker. I The coworker uses MS Office (no moving from that) and I use Libre Office (but could use MS Office if necessary). What do I need to add to my Nextcloud installation to enable that collaboration that doesn;t cost an arm and leg, if possible. Thanks.

You can share documents. But you wont be able to collaborate and edit the same document at the same time. You need to use collabora or onlyoffice for that feature.