Comment 7 for bug 1770961

Another piece of documentation refers to all the options around snap refreshes: https://snapcraft.io/docs/keeping-snaps-up-to-date

These include holding refreshes when the connection is metered and manual holds (specific delay of an update exceptional to the usual refresh schedule set by the user).

Popey's video at https://youtu.be/gVZOBgTDJWc?t=514 is also helpful for understanding all the options now available for controlling snap updates.