If you have made a custom program inside of Soundpaint, you can save it permanently by clicking “save Program to User Library” from the hamburger menu in the top left. Alternately, you can right-click the program name near the top and click "Save Program to User Library" from there. You can then decide which category you would like it to be saved under.
From here, any custom-made programs can be accessed by clicking the “user library” option in the top left, right next to the search bar. You can then navigate, find, and load all custom saved programs.