Currently there is no such option available.
If you really need it and there is a workaround for it, though it is a bit time-consuming:
- click on Stage view;
- go to Properties window and select Events tab;
- select eMag Loaded event;
- select Action by going to Advanced -> Create timer ;
- name your timer whatever you like ;
- set time duration of the first page;
- click Finish;
- click Timer Finished and select action -> here you have to finish the timer you created (the same name) and click Next -> Navigation -> Go to Next Page -> Finish. To the same event "Timer Finished" you have to create a new timer for the second page. Your Properties window must look something like on the picture attached.