Install the Logify app on your phone (Android or iPhone). Then either log in with your existing Logify account or create a new one from within the app — the app also works without a cloud account, but trips won't sync with the web until you connect one. Add a new vehicle in the app, or pick one that already exists on your web account — vehicles sync in both directions.
You can choose a recording mode for each vehicle. Manual start/stop is always available regardless of which mode you choose.
Newly recorded trips that still need a Trip Type show up in an "Unclassified trips" list. Tap or swipe a trip to assign its Trip Type — if that type requires it, you'll also be asked for a Purpose and/or Category. The same categorization is also available on the web.
Sync happens automatically in the background — when you open the app, when a trip ends, or when you pull a list to refresh. New trips recorded on your phone upload to your web account; trips, vehicles, Trip Types, and paired devices sync in both directions. There's normally no separate "sync now" step to remember.