To give a user the ability to use the sudo command you must add them to the sudoers file located in /ect/sudoers
Open the Terminal, Once the Terminal is Open login as root and open the file /etc/sudoers
sudo gedit /etc/sudoers
if you want to use vim you can simply enter the following into the Terminal
sudo visudo
Once you have the sudoers file open, scroll down to the line
root ALL=(ALL) ALL
Add the following line below the root line
user ALL=(ALL) ALL
***Replace “user” with the name of the account you want to give the sudo access***
Save and Close the file. The new user has now been added to the sudoers file and can use the sudo command