Problem:
- assume you have a cube, then you can select e.g. 5 of its edges and then use the menu PartDesign -> Fillet
result: you get immediately a fillet on all 5 selected edges
- no you have already a document with fillets and you realize that you must fillet e.g. 5 more edges using the same fillet parameters. Therefore you open the existing fillet but then you can only add one edge after another. This is very time consuming (in real life I deal with dozens of filleted edges on every part).
Solution:
Here is the first part that adds this feature to the fillet, chamfer, draft and thickness dialogs: https://github.com/FreeCAD/FreeCAD/pull/3050
Her a screencast of the new feature: