To display a tab of Activities, just like you can with Accounts, Opportunities, etc., use the following URLs in the Web Tab configuration screen:
- Displays a full-page list of Activities (Tasks and Events)
- The list is non-enhanced, even when viewed in an “enhanced lists” org.
- Displays Activities with the Sidebar and Tabs
these are especially useful if you have Enhanced Lists enabled – it looks amazing. Create additional views for Tasks or Events, and then save the URL for each as its own Web Tab as desired.
(For example, in my org, My Open Tasks is https://na1.salesforce.com/007?fcf=00B30000005UoEi – I made a Web Tab and in the URL put “/007?fcf=00B30000005UoEi.” Worked perfectly.
Addendum: To prevent multiple rows of tabs at the top of the page, you can launch the tab from a link. The best way to do this is to put a custom link in your sidebar and to view the tab that way.
Addendum 2: Kudos to Andres G for noting that the ?idtsp=mn version looks like the Salesforce Console–it absolutely does! There was a discussion on the developer boards.