If Learners are already registered then they can use the ‘Course Catalogue’ functionality (otherwise you would need to use ‘Connect Events’ to register people in the system first)
The help page is here (I have also pasted the text below):
The process is essentially to go to the ‘Training’ tab and then to ‘Training Catalogue’ and then build a folder or two to manage your course selection. Then build a ‘Course’ or ‘Curriculum’ and under the ‘Training Catalogue Settings’ check the box to list the ‘Course’ and then you can select the folder you with to use
The ‘Course’ will then appear in the ‘Home’ tab for each user and then in the ‘Training Catalogue’ tab for people to choose to self-enrol