I have created a custom ListItem in VS with a custom content template. I have enabled set Item-level Permissions. It is now only possible to see your own items in the list. Also it is only possible to edit your own items.
I would like to implement some logic or change some settings, so it will be possible for users in usergroup "SomeUserGroup" can see all the items in the list and can edit all the items in the list. Also from items created by other users.