Sequential Vs. Parallel Projects
 

It might just be me - but it doesn't make any difference in my setup when I change this setting. I can always click what ever to-do I want, no matter what order they are in. Soeven thought I have a project set up as Sequential, I still see all of my to-do's and can check them off in any order.

Anyone else having this issue? Maybe I just don't get it.

You need to enable to "view bar", then select the filter for actions that shows only "Next" actions.

-P