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How to Create a Space

The New Helmholtz Matrix Service and this Documentation Are in a Ramp-up Phase

We plan to offer Helmholtz Matrix from April 2026.

  • Please contact us if you encounter any errors.
  • Helmholtz members are also invited to give us some structured feedback here.
  • From time to time, you may see a red “Offline” notification message. This is because during ramp-up phase of the service, we may need to deploy changes to the server without prior announcement. Don’t reload, your messages will be sent with few seconds delay.

The Mattermost Wording was: Team.

  • Click + on the left column below the spaces
  • Choose Public | Private
  • Enter Logo, Name, Description
  • Click Create
  • Choose Just me | Me and my teammates

Modify Default Settings

  • Click Gear on the top right
  • General: Logo, Name, Description. Here, you can modify your entries.
  • Security & Privacy:
    • Invite Only | Space members | Ask to join | Anyone
    • Note: “Ask to join” is currently buggy for spaces (it works for rooms, though).
  • Roles & Permissions: You can manage authorisation level of the space users.

Inviting a large number of defined users without individual approval

Experimental

The following description is not thoroughly tested so far. Handle with care. We are thankful for feedback.

In case you want to let in a large number of defined users (e.g. from a whole center or department) to a space and the possibly related rooms, but do not want to:

  • individually invite every single user via Matrix ID, nor
  • individually approve every single “Ask to join” request, nor
  • make the room completely public to allow undefined users to join:

There is an experimental workflow for admins:

  • Set the space in Security & Privacy settings to Anyone
    • Do not “Publish this room in helmholtz.cloud’s room directoy”!
    • Set a random String as “Local Addresses”, e.g. # ajqd1i1dEdnQP1j:helmholtz.cloud.
    • Save.
    • This space can now be entered via the the just defined random string (and the original static (!) internal room ID).
    • It should not be possible to find or enter the space via room search without knowing any of the defined (random) Local Addresses.
  • Copy the URL of the room which now contains the just-defined string and share it to your desired group (e.g. via intranet), telling users to join this room via this URL until a defined deadline.
  • Users knowing this URL can join without further request or approval.
  • After the deadline, you can set the room to Invite only again, and / or delete the local address with the random string.
  • You can repeat the procedure with a new random string anytime later.

More Information

  • Step-by-step introduction to spaces (and many other topics) is provided by TU Dresden: Matrix an der TU Dresden > Spaces DE / EN.

Dictionary

Matrix Mattermost
Space Team
Room
(Gruppe)		 Channel
People Member