The Guided Import checklist suggests different media sources you may want to import into your Mylio Photos Library. The first time you launch Mylio Photos, you'll be prompted to use Guided Import, but you can return to this checklist anytime.
Click the Add Media icon in the top app bar, then choose Guided Import.
Click the button on a source card to add media. For example, click Add Pictures Folder.
When you're done, click the I'm Done Adding Media For Now button.