Thanks Michael. On flat face I`ve done it as you descibed. That question should be like - how create more than 4 edges face basing on curved edges around it.

I`ve made my shield:


But I did some faces as many 4 edges networks. It is time consuming. I would like to lear how do it faster.


Please look on that face. It has been created with using boolean substract:



I had problem with making this solid, So I`ve checked edges and I know that face is bad (this is example only). So I delete it to make that face from scratch to fit boundary edges. I try to rebuild that face manually (only one face). I`ve done it as many 4 edges networks. I`m looking for faster metod for making faces like this. It should be flat face on curvy edges.