Hi Stefan -
If you are creating a new user group, the selections that you make as you are creating will only be applicable for that specific User Group.
As an example, if you are creating a sub-set user group like "Customer - Finance Team" and you already have a "Customer" User group and you want everyone in that "Customer" User group to have access to everything created by this new User group that you are creating, that is when you would select the "Only the items visible to the selected user groups". It's a way of granting visibility to some items and not all.
Once you create your new User Group, you should also be able to go back in and will now see your User Group to select from, if you only want them to see anything for this specific User Group.
Also, once your new User Group is created, you can then associate which users should be in that new group.
Here are a few articles that might explain it a little more clearly:
https://support.cvent.com/s/communityarticle/Managing-User-Groups?is_article=true&lang=en_US&searchFor=creating%20user%20groups
https://support.cvent.com/s/communityarticle/Managing-Event-Users-and-User-Roles
Hope this helps!
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Becky Yousif
Senior Administrator - Event Technology
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