Teleporter BP (dont forget to Enable/Disable inputs properly or your Teleporters will fight over the F Key, Overlaps not included here) https://i.imgur.com/qsbOIoy.png
Character E Input https://i.imgur.com/XqaZ9Qd.png
Character R Input https://i.imgur.com/qR6Ob79.png (same just in reverse)
Thats the core functionality, I did not test it but it should work out of the Box. Add whatever you need on top of it.