Login settings

[Florin_Lica]

How i can enable just one user to be able to change to delete or to add to lists inside
please send picture will be more easy for me to understand
And also here after i press user will just show me this message and nothing will happen

So what i want… is to give full control to one person and the [ rest to only be able to see the content !!! ]
Thank you very much you-re awesome