If you are the Account Owner and logged in as such, click on the blue View Usage under Manage My Account. Then under Minutes, click the blue Breakdown of Recent Activity. Then use the drop-down to select the appropriate line for the Current Call Log.
For past call history, click View Bill under Manage My Account. Use the drop-down to select the billing cycle, then click the Calls/Messages/Data tab. Use the drop-down to select the appropriate line, then click the blue Voice button.
