CHANGE CURRECY SIGN, DATE FORMAT, ADD TEXT ON ADMIN PANEL

I have an Admin requiring the follwoing changes for just $10 please.

1) The currency sign shoud show ‘N’XXX not what is currently displayed
2) I need the name of the platform to appear at top of Admin
3) Date format to be changed to DD/MM/YY
4) Change password

I expect these to be done within an hour so that we can progress to other parts .