Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
You can customize keyboard shortcuts in the Customize Keyboard dialog box (File > Options > Customize Ribbon > Customize). Look for the Superscript command in the "All Commands" category. See the screen shot below.
P.S. The shortcut changes have been implemented gradually since they were first announced in the Office Insider blog; see https://insider.microsoft365.com/en-us/blog/new-zoom-shortcuts-in-word .