You can get to checkpoint editing via the checkpoint list or via view mode. 

Active: If this is deactivated, the checkpoint is marked as inactive, and will be hidden in the checklist. Note that only inactive (deactivated) checkpoints can be deleted.

Connect to PMI-schedule: This must always be used. 

Connects via assets: Must not be used. (This was used in older versions). If a checkpoint is connected like this, it is indicated with this icon in the checkpoints list view.  

Please contact our Support if you have checkpoints that have this activated. 

Reset: If the ‘Weekdays’ setup is used, this button displays. Click it before changing or editing what you have created here. 

+Document: Gives the option to upload or connect documents to the checkpoint. The document(s) is/are available when the checkpoint is performed.