I’ll be walking you through the steps of provisioning a starter portal in an existing environment. If you have not yet created an environment, or would like to work out of a new environment, please create it now. Keep in mind that depending on the environment you select in Power Apps, you can create a CDS starter portal, or a portal in an environment that contains model-driven applications that are a part of Dynamics 365.
1). The first thing we’re going to do is sign into PowerApps by going to to make.powerapps.com
2). Under Make Your Own App, click on Portal from blank
3). At this point you will be prompted to select an environment or create a new one. Enter in a name for your portal and give it a URL and a language preference. When you’re finished filling the information out, select Create to provision the new starter portal. you may have a little bit of time on your hands at this point in the provisioning process. The status of the portal will be display in notifications or in the application grid. Once successful, the status will be udpated.