There are 2 ways to work and record activity on a lead:
METHOD 1: FROM THE HOME SCREEN
From the home screen (1) search for the lead name and select it from the list. (2) Click on the icon called "Lead", this will take you directly to the CRM edit screen.
METHOD 2: CRM MODULE.
1.-Go to directly to the CRM module, look for the lead on the listing and click on edit.