Users who create org charts in Microsoft Visio may have the need at some point to combine, or merge, charts in Visio. There really is no elegant way to do this.

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How to Make a Beautiful Organizational Chart. For practical reasons, including readability, larger organizations typically limit the organizational chart to functional areas of responsibility, the ...

Image: Microsoft. Basic org charts are in the version of Visio everyone can use but if you want more layout options you need a Visio Plan 1 or Plan 2 subscription.