LibreOffice installation wants to close Firefox?

In the listing of programs - through 'all programs' there's a
folder(?) which includes any that are included in start-up ...

       I was told way-back-when that having anything in that, merely slowed
down the machine;
          it's simple enough to open any program as needed :wink:
         [leaving those shortcuts you use often on the desktop is as easy
as having them continually open & using RAM even when not being used :wink: ]