First check whether cron packet  is installed on not :

apt-get update && apt-get upgrade

dpkg -l cron

If not installed, then install it using following command

sudo apt-get install cron

Ensure that the cron service is running with the following command:
systemctl status cron

To check the active cronjob enter :

crontab -l

To create cronjob :

crontab -e

Let us make a move.sh file to run in cron.

!/bin/bash

mkdir /home/pi/Documents/backup/”$(date +”%d-%m-%Y”)”

find /home/pi/Documents/motion -type f -mtime +1 -exec mv ‘{}’ /home/pi/Documents/backup/$(date +”%d-%m-%Y”)/ \;

link to dowwnload .sh file

Run command for cronjob :

crontab -e

Done. Now cron move all files at 03:08 pm