ActiveSync:Deferred Task role provision

Question

Hello,
During active sync I am trying to provision an IDM role in some future date (ex. 30 days)
on the same date I will need to remove the current IDM role.
What is the best way to accomplish this?
1) Should be done using a Deferred Task?
Where I use a work-flow that removes the current role and then adds the new role?
If so is the done by executing a workflow using viewOptions.Process?
<Field name='viewOptions.Process'>
  <Disable>
    <neq>
      <ref>activeSync.DeferredFlag</ref>
      <s>true</s>
    </neq>
  </Disable>
  <Expansion>
    <s>MyDeferredTaskWorkflow</s>
  </Expansion>
</Field>2) Should this be done by manipulating the Role Date ?
http://docs.sun.com/app/docs/doc/820-5822/byahf?l=en&a=view&q=role+date
This is for IDM 8.1
All input is welcome and appreciated.
Thank you

Answer 1

This is an example of a field at the end of your activeSync form to set the workflow that invokes a deferred task (ours is quite complicated)
<Field name='viewOptions.Process'>
<Comments> Define custom workflow to run for each feed operation. Use null if the standard workflow for that operation should be used.</Comments>
<Expansion>
<s>Your custom workflow</s>
</Expansion>
</Field>