How to Create a Hyperlink to Another PowerPoint 2013 Presentation or Website
Click the Existing File or Web Page icon in the list of icons on the left side of the dialog box.
You can also link to a specific slide within another presentation by clicking the Bookmark button in the Insert Hyperlink dialog box. This brings up another dialog box listing the slides in the selected presentation. Choose the slide you want to link to; then click OK to return to the Insert Hyperlink dialog box.