This is only available to account managers with access to account settings and permission for integration credentials. Read more about access rights here.
The API-key management has an interface that allows for the regeneration of API keys. Due to the new length and format of the API key, you can copy it to the clipboard.
You can find API-key management under Account Settings > Access rights > Integrations API-Keys if you have access.
API keys are case-sensitive, and you should treat them as very, very sensitive security items.
Regenerating an API key could break existing integrations.