I'm trying to add field groups within a subtab of a custom record but it just says Loading... and never opens. Why?

AI generated answer (using internal Slack threads):

Based on the conversations, it seems like the issue of the "Loading..." message when trying to add field groups within a subtab of a custom record could be due to a couple of reasons: 1. The subtab might not have any fields assigned to it yet. It has been mentioned that the subtab might not show up until at least one field has been added to it. So, you might want to check if you have added any fields to the subtab. 2. It might take some time for the changes to reflect. In one of the conversations, a user mentioned that the subtab started showing up after some time. So, it might be a good idea to wait for a while and then check again. 3. There might be an issue with the form of the custom record itself. It has been suggested to check the form of the custom record and ensure that it is set up correctly. Remember to navigate to the custom form itself and select the Field Groups tab. You should see a whole bunch of subtabs where you can add the field groups for each subtab. Sometimes it extends beyond the usual page size and you have to scroll right if you have a lot of subtabs. ****** Disclaimer: This response was generated by an artificial intelligence assistant based on previous conversations from multiple Slack channels, and may contain inaccuracies or mistakes. ******