TL;DR: check video at the bottom of the guide.
If you have different types of Lnks, you might want to organise them and subdivide them into Groups.
Each Lnk Group will feature its title and will show the Lnks below its title. Here's how they look like:
To get started with Groups, the first step is to create a new Group. You can do so from the Groups page, which can be access from the Lnks page, clicking on the Groups icon, as shown below.
After you've created your first Group, you can assign Lnks to it by clicking on any link under the Lnks section, and then choosing Groups as shown below.
Here's a complete step-by-step video: