I just found this little feature by accident and thought it would be helpful. If you are on a SharePoint site do the following:
- In the upper right hand corner, click on your name
- Click on 'Nintex Workflow 2010 Settings'
- Click on 'Task Delegation'
This allows you to delegate any tasks assigned to you to someone else during a specific date range. This is useful if you are going to be on vacation, travel, etc. I didn't even realized this was there. I guess because I don't normally click on my name. This option also exists for sub sites.