To assign the task:
- select the task by clicking on it in the middle column
- click (or mouse over) the collaborate icon on the top-right column
- select from the drop down the contact you wish to assign the task to
- A task is assigned by default to the checklist owner.
- A task can only be assigned to one contact at a time.
- You can invite new contacts to share the checklist by clicking + Invite People to Collaborate with. This will open the share checklist popup