You can find the “astah-key.properties_org” in the Astah installation folder. (“key.properties_org” if you are using Astah SysML v8.0 and later or Astah System Safety.)
Copy this file and save it in the Userhome\.astah\professional (uml, sysml, gsn or systemsafety)
Rename this file to “astah-key.properties”
Open this file, remove “#” from the line of Shortcut key you want to change and set the key value (xxx.key)
Save the file and then restart Astah
Note
Do not make duplicated keys
By default, some different operations share the same Shortcut key(xxx.key), if you decide to change one of them, make sure to change them all
If you re-install Astah (by getting a newer version, etc), adjust the difference between the new “astah-key.properties_org” and your customized “astah-key.properties” file