In APM 10.7, we were able to run Manual transaction tracer from both Workstation and Webview.
But I am unable to find this option in DX APM SaaS console.
Release : SAAS
Here is the Workstation from SaaS - items are not available in SaaS but a workaround is provided.
See under "New Transaction Trace session" and click the hyperlinks listed under "more Information"