Set the browser to be used to open URLs in iOS App Webview

I am developing an app for my company and our idea is to use a webview to load embedded content from a BI tool. Does any of you know how to set which browser the app should use as a loader for the webview? The app will run on company phones with a company profile installed and Mobile Iron/Web@Work as secure browser. By defining Web@Work as the browser where the app will load the webviews, users will be able to securely authenticate within our network. Thanks.