The session was held on 11 June. You can now watch the recording.
The explicit religious practices are Seiza Meditation (the Quiet Sitting method he learnt from Okada Torajiro), the weekly talk and q&a session that took place on a Sunday at the Tokyo Kiitsu Kyōkai, and the weekly recitation of his eight “Principles of Living.” The implicit ones are educational journeys/pilgrimages, walking in nature (he loved sakura-season), mindful eating and drinking and aesthetics (calligraphy, flowers). The hoped for ones were the inclusion of music in the Sunday morning gathering, and free-religious weddings and funerals.
A Google Doc containing translations of Imaoka’s essays can be found at this link. Please note that this document is still being revised and refined, and this version is the most up-to-date one.