How to remove the password prompt after sudo su?

Question

SSH

After connecting with the admin user via ssh and entering the command sudo su or sudo -i, does the server keep asking for a password?
/etc/sudoers tried to change, but the password still asks.
File contents:

admin   ALL=NOPASSWD: ALL

# Members of the admin group may gain root privileges
%admin ALL=(ALL) NOPASSWD: ALL

# Allow members of group sudo to execute any command
%sudo   ALL=(ALL:ALL) NOPASSWD: ALL

Answer 1

you have
admin ALL=NOPASSWD: ALL
is read first, and therefore for this user the other two lines will no longer work.
If admin is in the admin or sudo group, then just remove the line from admin.
If not included, write
admin ALL=(ALL) NOPASSWD:ALL