Within the Teamwork.com Timer app, you can use keyboard shortcuts to quickly interact with your timers.

Shortcut options

Toggle selected timer 
Delete selected timer 
backspace / delete
Select all timers
ctrl  a / cmd  a
Log timer (or bulk log if multiple logs selected) 
ctrl  s / cmd ⌘  s
Add new timer
ctrl  n / cmd ⌘  n
Show import timers modal
ctrl  i / cmd ⌘  i
Search (focus on the field)
ctrl  f / cmd ⌘  f
Select previous timer

Select next timer