Force Rise courses to start from the beginning

From what I see there isn't a setting in Rise that would do that. There should be a setting within your LMS that would make them take the entire course again. I haven't seen an LMS that would just force the learner to start at the beginning of a quiz if the quiz is built in Rise. LMSs usually have a setting that is either resume where the learner left the module or restart the entire module. 

That said I could be wrong as I haven't used Saba.