To create a Project (a Portfolio item) proceed in WP admin menu to Projects > Add new. You'll be able to select your Project Format in Cmsmasters Project Options > Project:
1. Slider
2. Video
3. Album

project2

project3

Configure Riviera Project Options in a way you need.

Please note, that by default, these settings will be like the ones you have set as default project settings in Theme Settings, unless you change them for a specific Portfolio Project - open post.