You can change the method of navigation for your presentation from the master template settings. The type of navigation you choose will largely depend on the size and complexity of your presentation, the purpose of the presentation (should the slides be viewed strictly in consecutive order, or should it be easy to jump between any of the slides?), and your design preferences.
How to Customize Slide Navigation
Click on the content or cover template (blue arrow below) to expose the Navigation Options dropdown is exposed in the ribbon. The dropdown offers several options for customizing your slide navigation (green highlight).
Be aware that changes to the navigation will only by applied to the currently selected template. In the image below, the Content template is selected; the navigation option selected will appear on all the content slides when this content template is selected. But no change will be made to the Cover template; the Cover template must be configured separately.
This is the default navigation option, which displays back and forward arrows on each slide to navigate through the presentation one slide at a time. This is useful if you have a relatively short presentation, or if you want the audience to see each and every slide.
Select this option to display the presentation slides and sections within a series of tabs; this is a good solution for navigating very large presentations that are divided into sections, or to enable the user to select slides in non-chronological order.
This option adds a drop-down menu to the presentation, from which the required slide is selected. Like the tabs navigation, this is a good option for navigating very large presentations. It also makes it easy for the user to select whichever slide is of interest to them. Depending on the size of the number of slides and sections in the presentation, dropdown may take up less real estate than the tabs.
Choose this option if you don't want to enable any of the navigation presets. This is a good option to choose if you want to create your own custom navigation using dynamic jump buttons (which would allow you to use your own branding by importing images and using them to create jump buttons) or actions.