Adding new entry options to a cascade selection

I would like to use the cascade selection function that can be set to one or more selection fields, the moment, but I am unable to as adding “new entry” options to the form by intended users is not possible.

Guys is there a way to do this or is adding new entries really only possible in the “design mode”, which is only accessible via by admin users?

If this not yet possible, I believe it to be a good thing to consider including.

I look forward to your response, and as always thanks for the help with Ragic, it’s the best app!