In ArcMap you can include a .chm-File in your Add-In. If a user presses F1 while hovering over one of your Add-In buttons, ArcMap shows the related page in the .chm-File. I want to do the same thing in my ArcGIS Pro Add-In, but I can't find any information about whether this is possible or not.
Is this possible in ArcGIS Pro? Or is there any other way I could manipulate the help system in ArcGIS Pro so that it shows specific information for my Add-In? It doesn't need to be exactly the same as in ArcMap.
Custom contextual help is supported on dockpanes (scroll to the bottom of this guide to see contextual help): ProGuide DockPanes · Esri/arcgis-pro-sdk Wiki (github.com)
I am still trying to find out how to customize the F1 help from the ribbon.
Sorry about the delayed reply, but even after consulting with Pro development, I was not able to find a solution for the F1 custom help functionality from the Pro Ribbon. We add this as a future enhancement to the Pro API. Thanks for pointing this out.