Hi @Hemi Michaeli
It's Violetta from Planyway:)
Are you currently using the Trello timeline/calendar?
If yes, I'm afraid, it won't be possible.
In case, you'd like to see multiple boards on a single calendar/timeline, I recommend you to test the Planyway power-up which has this feature of the multi-board view.
Here you can find more detail: https://planyway.com/help/features/multi-board-view#add-cards-from-other-boards-to-your-timeline-or-calendar
I'd like to understand your use case here a little better. Approximately how many boards are in your workspace that you'd like to see in a workspace view? Right now workspace views support 20 boards. Is seeing all boards in your view important so that when a new board is added it automatically appears in your views?
Any feedback is appreciated and will be relayed back to that team.
Yeah that should totally be possible!
When you are creating a new Workspace Calendar or Timeline view you should see a popup like the one pictured after clicking the '+' icon in the left nav. There you will see two options to add boards. First, you can add boards that you've recently viewed. Second, you can additionally add any board from the workspace that you have permission to view. In that second dropdown, boards you are a member of will appear automatically as options, but you can additionally search for any board in the workspace by typing. For example in the screenshot, I've added the two boards I viewed recently in the workspace, and I've also searched for the 'salesforce' board which I'm not a member of.
The same applies to adding boards to a view that already exists. The same two drop-downs will appear in the "filter" menu on the upper right hand side of the view.
Please let me know if that helps you see the boards you want in your views! Happy to answer any follow ups if not.
Thanks for using Trello!