Hey there @DayanaS22! If you’re a more visual learner, here’s a tutorial that goes over the checkpoints themselves. The widget portion is just calling the respawn from a widget, which I will include a tutorial on widgets and event binding below as well.
Disclaimer: One or more of these links are unaffiliated with Epic Games. Epic Games is not liable for anything that may occur outside of this Unreal Engine domain. Please exercise your best judgment when following links outside of the forums.
Checkpoints themselves:
Series utilizing buttons: