Update webforms retroactively

Hello. I recently found a menu of settings that appear to control certain functions of web forms. The only way I found to access these settings was by going to "E-Sign" and then clicking on "Add e-sign branding".

I want to know what other way I can access this menu. I'm not sure if this has to do with the type of account I have.

Once I was in that settings menu, I changed some settings. Specifically related to the terms of user acceptance and the post signing landing page.

It appears that the settings I changed only apply to web forms I created after I applied the new settings, but I want the settings to apply even to web forms that were created before I edited the settings. How can I accomplish that?