Save as will only let you password the entire presentation. Security is usually only set up using the operating system built-in file password security.
BTW: I once tried to set up a system that did a variant of what you want but it was unsustainable. On February 14, 2019 at 2:08:11 AM, Demin, Konstantin (konstantin.de...@x5.ru) wrote: Good afternoon. I have a question about LibreOffice. Is it possible to provide users with different levels of access to slides in presentation? That is, for example, one user can edit the first 3 slides by entering a certain password, for example, the next 3, and so on. Thanks.