A professional diagramming tool that helps users visualize complex information through easy-to-understand diagrams.
Dear Ron,
It seems that you have Visio Plan 2 to edit the Visio file in Visio for the web.
If yes, you may be unable to set the right-to-left type in Visio for the web directly. You may add an input language in Windows and enable the keyboard layout for the right-to-left language. You can type and type the text in the Visio application and the changes will be synced to Visio for the web.
Using right-to-left languages in Office - Microsoft Support
Thank you for your effort and time.
Sincerely
Cliff | Microsoft Community Moderator