If you know that you will refer to the contents of a previously displayed image at any time during the presentation, it may be helpful to insert a link pointing back to that frame for quick access. How to set it up.
Links to another image in the same presentation
Open your presentation and navigate to the image containing the hyperlink. Then select the text, object, shape or image that you want to attach the link.
Next, go over to the "Insert" tab and click the "Link" button.  link in link group "width =" 218 "height =" 130 "src =" / pagespeed_static / 1.JiBnMqyl6S.gif "onload =" pagespeed.lazyLoadImages.loadIfVisibleAndMaybeBeacon (this); "onerror =" this.onerror = null ; pagespeed.lazyLoadImages.loadIfVisibleAndMaybeBeacon (this); "/>
In the Insert Hyperlink window that opens, select" Place in this document "from the" Link to "list on the left.
 To the right under "Select a location in this document" list, select the target item.
With the four options at the top of the list, you can select the first or last image in the presentation or image that comes just before or after the slide. that contains the link
If you need to link to another image, expand the "Slide Titles" category, here is a list of all the images in the document.If an image file has a title, the list shows the title.If a frame does not have one title shows it as "Slide 7"
Click on image one you want to link
A preview of the selected image is displayed in the window to the right. If you are unsure of which image it was that you needed to link to, it will be useful.
When you're done, click "OK" and PowerPoint will insert your link. 
As a matter of good practice, double check that the link is working properly. To test the link in the regular image editing view, Ctrl-click the linked object. To test the link when playing the presentation, you do not need to hold the Ctrl key. just click on the linked item.
If for some reason you need to remove the hyperlink, right-click the object and then select "Remove link."
Using the zoom function  If you use PowerPoint for Office 365 or PowerPoint 2019, you can take advantage of the new "Zoom" feature, which allows you to transfer smoothly to an image in the presentation by placing it in another image.
First, go to the image you are about to link. With "Normal View", click and drag the image you want to insert from the left pane to the current image.
When the image has been inserted, a new "Format" tab appears. Click on it.
In the "Zoom Options" group, select the box next to "Zoom Transition". You can also set the transition duration by 01.00
Now let's take a look at what happens when we click on the image during the presentation.
As you can see above the GIF, by clicking on "Introduction" slide we placed inside our "Information" transitions back to "Introduction" slide. By clicking again we will return to the original "Information" slide.