I would like to know about the process to request 'Create space' permission
You will need to ask your administrators to add you to a group that has "create space" permission.
You'll need to request this permission from your Confluence administrator. By default, anyone in the "confluence-administrators" user group should be able to grant this for you.
Do you know how I can identify and reach the administrators?
We're end-users of Atlassian software, we know a lot less about your system than you do.
If your admins have not been good enough to provide a method of finding them (like the "contact admins" option usually in the footer), then you'll have to ask other users. Often, I would start with the person who gave you the account.
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