Enable IMAP for Google Apps

I’m getting the following error message while connecting a GSuite account to Mailspring.

IMAP is not enabled for this Google Apps account.

What does this mean, and how do I fix it?

Your Google apps system administrator hasn’t enabled IMAP for your accounts, which means Mailspring won’t be able to sync your emails. Please ask him or her to enable it by following the instructions here: Turn POP and IMAP on and off for users - Google Workspace Admin Help.