Demantra Collections data

Hi experts,

Some inputs from your side about the demantra collection process on day to day activity.

Basically when data collection process is as below.

EBS the data is pulled to planning instance - Standard collections.

From Planning instance  data is Pulled through the demantra - Shipment and booking history.

My question is

1. Is that the standard collection process need to be scheduled on daily basis ? since if I plan to collect the shipment data on daily basis .

if standard collection process not required to be run mandatory on daily basis, then under which scenario it needs to be run