Within Teamwork, you can choose whether to set a project's Tasks view to default to list or board view.
When no default is set, the last view you used will be active the next time you access the project.
To set a default view, go to the Settings tab of your project and click the General subsection.
Note: Only project administrators and above can access a project's settings.
At the bottom of the General Settings panel in the General tab, you will see an for Default Tasks View.
Once you select a view option from the dropdown, click Save to update the default.
Note: This is a project-specific setting, so you can choose different default views across all of your projects.
For more information, see: Using Board View for Tasks