You made 'Firstname' and 'Lastname' in the profiles table when you use Fields Builder.
You can read more about to use Profile Fields Builder here
Dolphin Doc
You have to add Firstname and LastName to your own NEW BLOCK since you will only member shall view it.
---------------
Admin/Builders/Fields builder - Join Form
Add NEW BLOCK, click on it and write as bellow
Name: Contact Information
Caption: Contact Information
Description:
Join Page: 0
SAVE
--------------
Add NEW ITEM and drop it bellow your NEW BLOCK (Contact Information), click on your NEW ITEM and write as bellow
General area,
Name: Firstname
Caption: Firstname
Description: Please, write your Firstname
Type: Text
Advanced area,
Mandatory:
Minimum value 2
Maximum value: 30
Unique:
Check:
Default value:
SAVE
-------------------------
Add NEW ITEM and drop it bellow Firstname, click on your NEW ITEM and write as bellow
General area,
Name: Lastname
Caption: Lastname
Description: Please, write your Lastname
Type: Text
Advanced area,
Mandatory:
Minimum value 2
Maximum value: 30
Unique:
Check:
Default value:
SAVE
-------------------
Click on Edit Profile
- Move BLOCK Contact Information to active area and drop it at the top
- Move new items Firstname and Lastname to active area and drop it bellow BLOCK Contact Information
Click on View Profile
- Move BLOCK Contact Information to active area and drop it at the top
- Move new items Firstname and Lastname to active area and drop it bellow BLOCK Contact Information
-------------------
Go to Builders/Pages Builder and click on Profile
- Move BLOCK Contact Information to active area and drop it bellow General Info
- Click on activ block Contact Information and set Visible for members only and SAVE.
That's it.
-------------
You need now only to add languages strengs on Join, Edit and View Profile pages,
if you look at this pages you will se strengs like this _FieldCaption_Contact Information_View
This streng is to text Contact Information on View
_FieldCaption_Contact Information_View