Create a project for each type of web application (PDS, IdP, Hub, Attribute Provider, Authentication, Blockchain or Verifier).
For example, if you want a SAML idP create a project of type IdP.
(You may have multiple projects of the same type, each with their own settings.)
A note on UI
Some projects may host a separate UI and simply call API functions.
(e.g. a mobile app.)
However, it may be more appropriate to utilise API UI endpoints for certain applications, e.g. for login and registration to a SAML IdP project.
In this case you will need to modify (or create from scratch) suitable web pages which must then be located in the
/user/{projectid}/web and webres folders for your installation.
For a list of API web endpoints and their functionality, please see the API documentation