Participants for calendar event

I am using ERPnext of the following details:
ERPNext: v7.0.26
Frappe Framework: v7.0.19

My problem with the participant in calendar event: the setup that I have is showing the role as participant and not showing person. I need to be able to select certain email instead of selecting role which is used for a lot of users. So how to resolve this? Any setup that help me to select participant as person instead of role?


I have a same issue on my testing site and I also see this on and

But if I am right, when I checked this function earlier, it worked as needed.

Any idea to fix it?