The steps to configure the Link Account are different depending on when you configure it. You can configure the Link Account at two different timings. It is when you are invited to join a guest space and when you have already joined a guest space.

For more details on how to configure the settings, refer to the "Steps to Link Accounts" section in Actions by Guest User: Linking Your Guest Account and Kintone Account . The page explains the steps based on two different timings to configure Link Account.