These tips may have been discussed in the past but a quick search didn’t give any results.
Tip #1 In the Peopoly Moai printer settings, under the general tab you can enable free rotate. This will allow you to invert the bed so it is at the top. It helped me when placing supports.
Tip #2 Under edit plan cut, you can move the plane throughout your model to identify any islands that may need supports. Just remember to cancel out of the changes. This isn’t as convenient as B9Creator but it did help me.
Much success in your printing