Here's some stats on progress to shoot for each day. This is based on an 8-day event duration and striving for max rewards.
Individual PP: 375k/day (3mil max)
Union PP: 5mil/day (40mil max), or 14 members each aiming for max individual PP
Demon Subjugation (Expert): 37.5/day (300 max), or 2.7/day for 14 active members
Demon Subjugation (Ultimate): Same as Expert
Hallowed Grails: 400/day max, or 28.5/day for 14 active members (~5 Lilim Experts)
Those who can clear Ultimate should be focusing on that, and letting weaker members handle the Demon Experts. 5 soloed Ultimates a day is a good quota to shoot for (more if you get help from others). If you can't do Ultimates, aim for 6-9 soloed Demon Experts a day (more if you get help) and farm more than your share of Hallowed Grails for your union.