I wanted to send a note about using the calendar that is part of the Hyperledger Brazil Chapter mailing list. I would encourage the group to make use of that whenever there are planning meetings, events or other invites you want to share out with the group.
The admins of the mailing list can add items to the calendar at:
And when invitations are added to that they will also show up on the main Hyperledger community calendar at:
If you add events and invite the group and also set a reminder, it will post the invitation to the mailing list as well so everyone is aware of the meetings and have the information to join. It's a helpful way to share about calls and encourage more people to join them.