How do dungeon resets work?

[Skev 1]

If I do a normal 5-man dungeon run with a group, when can I run that dungeon again with the same group?  Is there a way to manually reset the instance?

[Mister K 3]

Should be able to right click your portrait and hit 'reset all instances'.
Unless this was not available during Vanilla?

Edited November 25 by Mister K

[Purple Witch 13]

That was not a "Vanilla" function. To reset instances in vanilla you have to use the following script:

/script ResetInstances()
 

Each instance reset has an hour long reuse timer and you have a maximum of 5 resets per account at a time.

[Skev 1]

Thanks Purple Witch!