Run a zone multiple times in the same schedule

I am trying to figure out if it is possible to run a zone multiple times in the same schedule.

Here is what I am trying to do: I water my lawn with well water and the water contains a lot of sand. I installed a sprinkler valve on my sediment filter and piped the water from the filter onto the lawn to drain the sand out. I would like to run a single schedule but after every two zones run the zone that back flushes my sediment filter. What is the best way to do this? I set up a bunch of different schedules but was hoping there was a better way?