CMS Made Simple Forums

How to set values of inputs (Field "Surname" and Field "E-Mail") to field "Email Results to set Address(es)"?

you can't change the type of a formfield. remove the old field en replace it with the new field, and control your Submission template for the new field.

I don't want to change the type of a formfield. I want, that values of two fields - "Surname" and "E-Mail" insert into "Email Results to set Address(es)". I need, that the "From" value of the mail would be a text of "Surname" and "E-Mail" fields...

Well therefore you have to change the surname to "Email from Name" and the email to "Email from Address".
As you can't change the type of a formfield, you have to delete the field and replace it with a new field as described above.

And after doing such changes you might need to have a look at the EMAIL template of the submission field. New fields will get new ID's which are NOT automatically exchanged in the email templates.