I support this request - it’s one of the most important workflows that I’d like to accomplish. I’m trying to figure out a workaround but it’s like fitting a round peg into a square hole.
@Idolwild and others,
Although this is a somewhat older thread it might be interesting to look at this one Master board linked to multiple low-level boards - #3 by jakobrydberg
The Rollup Multiple Boards app let you create multiple “down level” boards where the connection is maintained in a database. In the high level board you can have recipes that does a rollup from all “down level” boards. So it basically rolls up an entire column in any number of “down level” boards to an item in the high level board.
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In essence, what I think I (and maybe many) are looking for here is the ability to create Child boards from a Parent board - maybe let’s call them sub-boards for consistency. This would look fundamentally similar to sub-tasks in a board entry, except that they’re collected in their own sub-board. They would differ from sub-tasks, which are exclusive to that entry. This is pretty similar to the relationship between Tasks, Stories and Epics in AGILE.
These sub-boards would be indented from the parent board, and both the boards and the individual entries would maintain cross-links, so when anything is updated, it flows to the other(s).
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hi @Russ-Avalon
It looks a perfect fir for the Rollup Multiple Boards app where you indeed create sub-boards from a parent board. An item in the parent board represents a sub-boards (holding the details). The data from the sub-boards (compare it with the column summaries) is kept in sync with the parent board through defining recipes.
@Idolwild This where Monday need to implement a Project Column that completely links/mirrors tasks from one board to another like I have suggested as a function below, check it out and upvote it!
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I would say the most straight forward use cases for us as a Web/Marketing Agency would be related to rolling up billable hours and other cost-related numbers. Example:
Top Level Board of “Client Website Projects”
- Each Item (pulse) is a project
- There are columns such as “Total Estimated Hours”, “Total Actual Hours”, “Total External Cost” that we need rolled up from Low-Level Boards.
Low-Level Boards - One per “Client Website Project”
- Each Item is a Task for that project (ie. Design or Development related)
- There are columns such as “Estimated Hours”, “Actual hours” (Time Clocking Col or Formula), “External Cost” (ie. 3rd Party Purchases)
The High-Level Board Rollup (aka. Aggregation) columns would show the total from their respective columns in the low level boards, and you should be able to choose specific “Groups” in those Low-Level Boards OR the whole Low-Level Board–This way you can exclude groups (ie. Pending Work) from the totals.
Let me know if that helps!
hi @zlanich
What you describe sounds very much like the design principles of Rollup Multiple Boards (see https://monday.com/marketplace/101). This app rolls up multiple boards in a high level board where each item represents a down-level board. The good thing: it writes to normal monday columns in the high-level boards, so you can calculate (formulas), automate and integrate with the aggregated data.
This is a good find. It would be nice though to just have basic rollup built into Monday core, especially since it’s already supported in dashboards more/less, and since that app seems to be between $300-$5,000, haha.
A one time charge of $300 per high-level board (not too bad I think 
)
We just updated the status. While this is not going to be released in the near future, there are some great suggestions for other ways to accomplish your needs!
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This is a pretty simple request that people have raised in the community for a lot of years now but it simply hasn’t been addressed yet.
The ability to have the same item mirrored in different boards and being able to update it on one board and it gets updated on all boards.
My use case is simple, let’s say I’m managing products from a store, and I have different categories, one is “Smart Products” and the other is “Watches”. Then we have the Apple Watch, which is both a Smart Product and a Watch.
I want the Apple watch on both boards without duplicating it, being able to change the stock of it on one board and the other gets updated as well.
No, the connected boards don’t work because I’m not just looking to connect a single column, I’m looking to connect all the columns.
Thank you.
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Hi @Julietteb, Please can you confirm if there has been any further progress in adding this essential feature? I too have a need to be able to select an entire group within the mirror column. I have been asked to show our YTD orders compared with previous years and the only way to do this currently is manually select each order one by one! This would be so much easier if I could just select the entire group (in my case the groups are Jan, Feb, etc.)
Our subscription is due for renewal soon and if this feature is not due to be added in the next month or two, then I think it would be easier to just use SharePoint.
Thanks.
“Imagine a high/low-level board scenario, where the high-level board has a pulse-per-project, and there is a low-level board per project.”
…
“it’s impossible and impractical to remember to go back into the high-level board and update the mirror column settings by selecting all of those new pulses, so the roll-up is accurate.”
We have this excact setup and we actually have an emplyee who is tasked with manually connecting every individual pulse from the low-level board to the high-level board each day. This basically costs us around 12 hours a month, which equates to 270 EUR a month and 3240 EUR a year in wages. So frustrating… 
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Hallo everybody,
Was wondering if someone can help set up a masterboard that is mirrored into othr board in different workspaces. So if we create items, move items into other groups, add information in the main board it does the same in the other boards.
Thanks