hyperlink in powerpoint to subtitle in presentation

i am presenting a powerpoint presentation with hyperlinks that go back and forth within the presentation.  BUT, I'm running the pp using Libre Impress since i don't have ms office.

how can i get those hyperlinks to print something at the bottom of the display screen as a subtitle or reasonable facsimile since Libre Impress doesn't handle them well.?

the hyperlinks are sporadic throughout the presentation.

when i continue with the presentation i would like the popup to disappear.

if i type a cc in manually, can i type multiple cc's and display them at the appropriate time while still in the presentation?

i just don't want to interrupt the presentation needlessly.

i'm using a dell inspiron 15 3000 laptop w/win 10.