Instrument grouping

In the current version (4.4.4) of MuseScore Studio, it is not possible to group instruments with brackets: these ones are not movable horizontally.
In a piece where violins 1, 2, violas, cellos, etc., are split in a number of sub-groups, I would like to present their corresponding staves as in the attachment (made on Photoshop).
Thank you to enable this feature in a future release of MuseScore Studio.