Hello

 

How can i make Name -field mandatory when guest posts? Now they can leave it blank and post says name is Guest

I do not know of a built in way, but if you want to do it simple, simply have Jquery change the button to disabled if they have not entered anything. I would not bother with changing stuff in the backend though as anyone can simply put in "Guest" as their name if they want to regardless, or even "guesst" or whatever they wish.