How to create a swimlane diagram that is not linked to specific dates?
 

I want to be able to produce a swimlane diagram that is not specifically based on a specific date in time, but rather a non-specific amount of time and not linked to an actual date.

Can this be done with OmniPlan? Or do I have to use my OmniGraffle for this?

I'm wanting to map out a process/resource workflow that happens over and over and is not linked to a specific date or even amount of time.

Cheers, Andrew.