Hello,
You can use a schedule tracking for this scenario as flowing:
1- Select all days (should be in blue color)
2- select 3 records per day
3- specify the time by adding 8 h to the first time
* To get a record of when the device starts moving do the flowing:
1-move to I/O
2- put the movement flag on high priority and select On Change operand,
Note: you will receive the movement record with the next periodic record