Check also this one: https://appstore.home.mendix.com/link/app/1835/Mendix/Keyboard-Shortcut
One way you could achieve this is:
For an exact how to, see: https://world-old.mendix.com/pages/releaseview.action;jsessionid=1A7C4C437A52C054071566D4038E342A?pageId=7635351
and especially the part 'Adding the enter button'.