When you first install the module, I wouldn't be surprised if you'd want to create a To Do List item right away and then assign the task to one or more users.
It won't work.
Before users can be assigned a To Do List item, you must give them permission to be assigned to such an item. This is done in the usual permission place: Administer » User management » Permissions. You may also want to create a new role of people who deal with To Do List items.
Actually, the To Do List module comes with many permissions so you may want to ...
Go to Administer » Site building » Modules and click on To Do Block to install the Block extension for the To Do module.
Go to Administer » Site building » Modules and click on To Do Action to install the Action extension for the To Do module.
This module requires the installation of the Drupal Core Trigger module.
Go to Administer » Site building » Modules and click on To Do Views to install the Views extension for the To Do module.
This module requires the installation of the 3rd party Views module.
Global settings are found under Administer » Site configuration » To do list (admin/settings/to_do).
Only To Do List administrators can edit the Global Settings.
Install the module as usual, generally under your sites/all/modules folder. On a Unix command line, you can use the tar tool like this:
cd sites/all/modules tar -xf to_do.tar.gz
Then go to Administer » Site building » Modules and enable the To do list module.
Once installed the module offers several permissions under Administer » User management » Permissions (admin/user/permissions). These are include permissions similar to the Node permissions and some others. All the permissions are explained below.
Additional permission granularity can be obtained with the use of other modules as defined in the Extend To Do List.
The permission functions properly, no issue in that regard. However, the name of the permissions should be using "to_do" with an underscore to be 100% compatible
The module works and is secure, however, there are problems difficult to circumvent. The following lists them. If you can help fixing some them, you'll be more than welcome!
It is possible to reorder the node fields using the CCK module. If the Discuss This! comments do not appear exactly where you'd expect them to be, try using the the CCK module: