Your Infinite Pulp textures are not ‘installable’ assets (unlike a brushset for example).
Open Your Texture Templates As Needed
We recommend simply storing the textures locally on your Desktop hard drive or iPad (or iCloud/Dropbox) ready for use any time you need one.
Your templates are saved in .afphoto format but can be used in both Photo and Designer. To get started, watch the complete Affinity Tutorial below.