Click 'all tests' in the main sidebar.
Select the test from your list of tests
In the test edit toolbar you'll see 'frequency' change the frequency to the schedule you want it to run.
That test will now run as often as you selected.
Select 'All Tests' or a group from the main sidebar.
Click the checkbox to the left of each test you want to edit in bulk, or select all using the topmost checkbox.
The bulk-edit bar should appear above the table, select from the 'frequency' dropdown the schedule you'd like your tests to run.
Now you're tests will run at that frequency.
The tests run based on the last time they were ran. If you select '1 hour' and the test ran 30 minutes ago, it will run in about 30 minutes. if it was last run a day ago, it will start running shortly.
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