How to allocate user role

Each listing needs to be “owned” by one user.
You can create the users, and then assign them to the listing (towards the bottom of the listing in the backend).
The users will have to be at the author level before they can be assigned, but you can set them to a lower level later if that is what you want.
Listings can only be edited from the frontend, by the “owner” of the listing and administrators.

Thanks.

You can create one user that can edit all listings if that is what you want.

1. Create a new user at Users
2. Make sure the user is at the author level.
3. Navigate to a listing in the backend, scroll to the bottom of the page and assign the user to the listing.
4. Save

Did you assign the user to all the listings?
A user cannot edit the Groups page, only listings.
Once you assign the listing, there will be an Edit button on the detail page in the sidebar, like this detail page: http://attachmentparenting.co.uk/places/united-kingdom/oxfordshire/abingdon/south-east/apuk-abingdon/

You need to allow your users to add or edit Places at GD > Design > Navigation >
See https://wpgeodirectory.com/docs/core-design/#navigation

You also need to add this CSS:

.geodir-loginbox-list ul {overflow: visible;}

Your theme takes over the GD login box CSS styling.

You can change our spelling mistake etc using the language files: https://wpgeodirectory.com/docs/translate-core/

Please post WP administrator credentials if we need to check things further. POST THEM IN A PRIVATE REPLY.