You may execute your test from the cases screen by doing the following:
Go to cases screen
Select the folder and test you wish to run by clicking it
Select the browser you wish to use by clicking ‘Browsers’ or 'Devices' tab, and ticking the relevant browser, and clicking ‘Save changes’ on top right.
(Optional) - Go to settings and select environment and releases you wish to run it on.
Click on ‘Run now’ button which appears at the top right.
You may execute your test from the suites screen by doing the following:
Go to Suites screen
Select the folder and test-suite you wish to run by clicking it
Select the browser you wish to use by clicking ‘Browsers’ or 'Devices' tab, and ticking the relevant browser, and clicking ‘Save changes’ on the top right.
(Optional) - Go to settings and select environment and releases you wish to run it on.
Click on ‘Run now’ button which appears at the top right.