See the screenshot below.
All your favourite switches can be accessed from lock screen without opening the app.
Step 1. Make sure the Control Center in accessing on Lock Screen. (Settings-> Control Center-> Access on Lock Screen On)
Step 2. Pull the Control Center down and click edit button
Step 3. Search for Pert app and click + icon and click Done on top right.
You will know able to access all your favourite switches from the lock screen