You can register for the Zoom meeting and submit questions...
here is the link : https://view.our.berkeley.edu/?qs=381c65978577a32dfe5d539cce5e67b16a57935ecf8cdf0d23cf65cdd7efb1fc03d0a5359f385b731b29ee3ef914b858c09044cc42e1161872a0895da5bb3f28ee0c4936f953daeec6d6efaba6e2a2b5
here is the link : https://view.our.berkeley.edu/?qs=381c65978577a32dfe5d539cce5e67b16a57935ecf8cdf0d23cf65cdd7efb1fc03d0a5359f385b731b29ee3ef914b858c09044cc42e1161872a0895da5bb3f28ee0c4936f953daeec6d6efaba6e2a2b5