Go to "App Limit" section of the "Screen Time" feature.
- Click on the "Add New Limit" button or "Create New Limit" if you have already create any rule/s.
- Select the category from the selection list
- For custom selection of applications, click on "Other Applications" from the category list
- After selection of categories or applications, select the days as a Daily or Custom days
- Select the timings as per your preferences
- Click on the "Save" button from the below selection.
- After creating the rule, click on the "SAVE" button in the top right corner of appbar to apply the rule/s.