Step 1: Take a look at your right side on the screen, there is a button named Create rule. Click on it.
You can choose one of three types: tagging order, tagging customers, tagging products.
After choosing a type, you will be taken to a new page named Choose Preset. Inside this page, there are a lot of different preset. You can choose one of the presets.
For example, after choosing a tagging order, I choose Tag orders based on Products.
For the section: Create new rule, don't forget to click on Activate this rule.
For the Applied tag, you can add your tag.
For Criteria: you can choose the property, and then to a for compering with the value. You can combine multiple conditions with OR and AND.
For the Actives dates, you choose start date ( You can choose the end date )