Motorola has done many changes in Android 6.0 Marshmallow , they have removed Motorola Migrate , Motorola Connect , Chat and Call feature from Moto Help Application and more .
Motorola Chat / Call feature on Help application enables user to chat to Motorola Customer Care and ask your queries to get a solution . But Motorola Removed that feature in Android 6.0 Update .
Although you can still enable Chat and Call feature on Motorola Help application , by a simple trick !
Open Setiings > Storage & USB > Internal storage > Apps and there you will find Help application !
Just Open it and Clear data and Clear cache !
Now the hidden feature is no more hidden ! But you will have to do the above steps every time you Open help application , in order to chat with customer care !