Add via the Practice admin
To add a package to your public profile via the payments page, simply click on the three-dot menu of the package and then show on profile option:
Add via the public profile
Once you're in the public profile, click on edit content in the upper right-hand corner of the page and then head over to the packages section.
Once you're there, select the packages that you'd like to add to your profile by clicking add package at the bottom of the list.