Einkorn doesn’t need to be kneaded like all-purpose. If you are using einkorn flour, just mix until it comes together. If using all-purpose, you will want to knead for almost 10 minutes for the gluten strands to develop properly.
If the dough is too sticky, add a tablespoon of flour at a time until it is no longer sticky.
If you have a stone countertop for rolling out, you probably will not need to dust the countertops with flour. If you are using a different type of surface like a wood cutting board, dust with a little flour to help prevent sticking.