Slideshow in Lightroom CC

You can't.

The best options are available in your Lr Web app. You use segmentation and text and can share a link and (optionally) allow downloads.

Log in here:

https://lightroom.adobe.com/

This is an example I made:

https://adobe.ly/2zdFqSF

You can of course view slideshows on phone or tablet.

Norm,

Don't know how important slideshows are to you.  If they are, investigate video editing programs.   My favorite is Premiere Elements.  Lightroom Classic's Slideshow module works but is limited. 

There are a few reasons why....

- There is a lot more control and opportunity in Premiere Elements with titles, transition, music tracks, etc. 

- Output choices range from quick  transfer to YouTube or Vimeo that make it easy for viewers to see your slide show on anything with a screen. 

- One output choice is 4K for anyone that has a 4K TV!  Last I looked, Lightroom only does 1920x1080.

- As an Adobe product, Premiere Elements has ACR built in.  If you elect to save work in XMP files in Lightroom Classic, Premiere Elements will see and import the images as RAW files with the Lightroom Adjustments. 

- 4K slideshows made from RAW image files on a big 4K TV are the best slideshows I've ever seen.  I used to think it would be nice if Kodachrome came back.  Not any more! 

- Premiere Elements is cheap.....especially this weekend!

Norm4857  wrote

 

Thanks. I will see what the price is for Elements.

Normally it is about $100.  This weekend it is about $60 at places in the USA like B&H or Amazon. 

I'm not sure if this is what OP was looking for exactly, but Lightroom CC creates a web slideshow view when you share an album. If you create an album in LRCC, then go to the link created, you (and whoever you share that link with) will see a SLIDESHOW button at the top. HINT: make sure you change the picture order AND set the cover image before you create the shared link. Hope this helps!