[Create/Save New Page Presets]

I do a lot of design, photography and website work. One of the things I run into a lot are needing specific page sizes for various websites or designs. In photoshop I would be able to create a preset for a image size that I could go back too, and not have to remember the dimensions of. For instance, creating slides for a website slideshow. Some may be 800 x 600, and another website would have one that is 900 x 300. Is there a way that I can save those presets in the drop down list when creating a new project in Affinity Photo so I can have it labeled "Tom's Website Slideshow" so I know which preset it is? It would make it a lot faster than having to go back and lookup what the size parameters were for each website.

 

Thank you 

Have the same problem any one can help ?