You have 3 ways to do that:

• From the Joomla administration
• From the Joomla frontend by setting up permission for a user group
• Using the Import/Export/Sync tool (.csv files)

There's only a single package for My Maps location, just install it and everything is included.

K2 location are stored in a dedicated category in My Maps location.

So you have the choice to display those location:

- Using a menu and select K2 category or Root category
- In the K2 dedicated module module
- Using the plugin editor to select K2 items