A purchase list allows you to make a list of your favourite or regularly ordered products. You can also use this functionality to see your account’s prices for these products and easily add them to basket. Some of the functionality mentioned here is only available to those with the relevant permissions.
If you're an administrator for your organisation's account, the purchase lists section will show you the lists available to all users linked with that account. If you don't have administrator permissions, you will see only the lists your administrator has granted you access to. If you sign into an account with multiple linked accounts and create a list, it will be available for everyone who uses that account.