Need a VB code to generate sheets from a list of cells

Hi, first post here, but have already used the site many times to help me compile a few spreadsheets for work...

i am pretty poor with excel in comparrison to you guys, but am getting there slowly but surely

I used this code from another thread, its used to generate worksheets with a specific name from a list...

Sub copysht()
    Dim cl     As Range
    For Each cl In Sheet1.Range("A:A")
        Sheet2.Copy after:=Sheets(Worksheets.Count)
        ActiveSheet.Name = cl.Value
    Next cl
End Sub

So at present, its copying sheet 2 and naming them from sheet 1 column A, but i need two things additionally which i am not sure how to do...

firstly, i need it to automatically stop when it runs out of names in the column A rather than generate an error when the list runs out.

Secondly, i need it to operate in a "live" enviorment, so the second someone adds to the list it creates a new worksheet with the corresponding name, and also when a name on the list is deleted it deletes the corresponding worksheet.

Any help much appreciated as its way beyond my capabilities!