How to schedule apex jobs from UI in Salesforce?

Scheduling a Job from the UI
You can also schedule a class using the user interface.
1.From Setup, enter Apex in the Quick Find box, then select Apex Classes.
2.Click Schedule Apex.
3.For the job name, enter something like Daily Oppty Reminder.
4.Click the lookup button next to Apex class and enter * for the search term to get a list of all classes that can be scheduled. In the search results, click the name of your scheduled class.
5.Select Weekly or Monthly for the frequency and set the frequency desired.
6.Select the start and end dates, and a preferred start time.
7.Click Save