From this page, multiple pool-level actions can be initiated.

Multiple pool-level actions can be initiated depending on the zfs setup you have made.

• attach (add a drive to a mirror vdev)
• cache add (add a cache device)
• cache remove (remove a cache device)
• clear (forget errors and try to restore a device/pool to normal)
• detach (remove a drive from a mirror)
• history
• offline
• online
• remove
• replace
• scrub
• spare add
• spare remove
• upgrade
• vdev add

Here we have selected on the first screen “Scrub a pool” and we are about to start it:

Here we see that the Scrub Command execution was successful:

The button “Return to Command page” will load the first page again in case you like to select another task.

Now I have started a Scrub of my pool I also like to see its progress, for this I did press the Tab Information: