Where do the settings go?

[x61]

"
Set the following variables with your Client ID and Secret.

(setq org-gcal-client-id "YourClientId"
org-gcal-client-secret "YourSecret")
"
Where do you put the settings? In the .spacemacs? or a separate file?

This is not clear

[jeromegrosse]

They have to be set within dotspacemacs/user-config.

Simply place what you pasted in the issue in that section with your client id and client secret and it should work just fine.