Some environments with CRM Analytics enabled may not have the capability to create Custom Map Charts with the proper permission set license and permissions assigned.
In case your org has the proper permission set licenses, but cannot see permission "Manage Analytics Custom Maps" available or cannot create custom maps (Upload GeoJSON), please contact Salesforce.com Support and refer to this article.
000389232

We use three kinds of cookies on our websites: required, functional, and advertising. You can choose whether functional and advertising cookies apply. Click on the different cookie categories to find out more about each category and to change the default settings.
Privacy Statement
Required cookies are necessary for basic website functionality. Some examples include: session cookies needed to transmit the website, authentication cookies, and security cookies.
Functional cookies enhance functions, performance, and services on the website. Some examples include: cookies used to analyze site traffic, cookies used for market research, and cookies used to display advertising that is not directed to a particular individual.
Advertising cookies track activity across websites in order to understand a viewer’s interests, and direct them specific marketing. Some examples include: cookies used for remarketing, or interest-based advertising.