Version 2.4 of HomeKeeper makes all aspects of the HomeKeeper app compatible with the Salesforce Lightning user interface. Most of HomeKeeper works the same in either the Classic or Lightning user interface, but some functionality in Lightning differs slightly. This article explains how editing/updating works in the Lightning user interface.
In Salesforce Lightning, when you view a record, editable fields will display a pencil (indicating they can be edited). Note: Formula fields cannot be edited by design.
Click the pencil to edit that field, and other editable fields.
Your edits will be reflected after you click "Save".
Check out this Salesforce article to learn more about to edit and work with your records in Lightning.