Software password changing option for user

my user asked how to change security password
so please provide this option in new update

Please explain what you are looking for?

In Security > Global password

my user want to change that password
for example
at first i set password to 1234
now he wants to update password himself to 9876

so i want option so that my user can set his password for his software

If you use a password mark, that should be possible.