Proposed feature: Follow-up task after finishing another

I would like to have the option that when I tick a task as completed I could add another task that some how is linked to it. For example: 1st task is contact some one to meet up for a discussion, 2nd task after arranged with the person would be the meeting date. This could also be helpful in the journal as there is kind of a sequence of some task that are linked together. Let me know what you think. And congrats for such a good app. Cheers.