There are many ways to set up milestones. For more options, see the full list here. This article goes over the achievement level milestones, how it'll look on a report, common examples, and how to configure it.
This configuration is a progressive milestone approach to help volunteers work toward their hours. We've seen setups like this:
To configure milestones for different levels, go to your Organizer Dashboard
Click on the Settings tab, then click on Milestones
Select a time period
You can also set up a custom time frame. For example: if you want to set up hours for a school year that runs from September to June, you would select Every 1 Year starting on 9/1/2018.
Milestones automatically reset after each specified timeframe, until changes are applied or turned off.