Open an app: tap its icon. Press Enter in the search box to open the first match.
Move things around: drag an icon to a new place (on a phone, press and hold first). This works when the sort is “My order” and the search is empty.
Search: type part of a name or web address. Press / to jump to the search box and Esc to clear it.
Sort: choose A to Z, most used, recently opened, or group by category. “My order” brings your own order back.
Add or change an app: use +, or the three dots on an icon, to rename it, change the address, colour or icon, or remove it.
Saving: your layout is saved to your account, so it is the same on every device.