How do you control how long before a selected message shows as read?

Is there any means where I can control how long after I select a message before it shows as read? I want them to change as soon as I select them, not some indeterminate point in the future.

Go to Tools --> Settings --> Mail --> Read

Specify the number of seconds in ‘mark messages read after displaying for … seconds’.

I am marking this as “Answered”.

Jan