CTRL + ALT + I

Hey, I would like to follow this tutorial and use CTRL + ALT + I.
Unfortunately, the shortcuts are not working and I find some solutions in the internet, that do not seem to work,
because the versions seems to have changed.

How can I activate this shortcut for the current version?

Go to Keyboard Preferences and use the Defaults button and choose the Full set.

See this page in the Manual: https://manual.audacityteam.org/man/keyboard_preferences.html

WC