Administration Tool - Schedules Menu
Coveo Enterprise Search comes with a scheduling mechanism that allows you to automate source content updates and system tasks.
For each of your sources, the best practice is typically to schedule:
An Incremental Refresh at short time intervals to efficiently keep you source closely up-to-date with the repository (see Scheduling a Source Incremental Refresh).
A Full Refresh at longer time intervals to catch possible corner cases that could be missed by the Incremental Refresh (see Scheduling Source Refresh Actions).
The time intervals at which you schedule Incremental Refresh and Full Refresh depend on a number of factors (see What Should Be the Frequency of Source Refresh Schedules?).