Am 29.03.2021 um 17:27 schrieb Periklis Gogas:
Can I add this myself?

[with respect to a GUI hook of the gen_hurst package]

No, the package itself has to specify where in the menus it wants to go. So this would require a (minor) upgrade of the package. I could try to contact the author Joachim, if he's still available and willing to maintain this.