If you are using Internet Explorer try this...if you are using any other browser just google how to save passwords to web sites in chrome or whatever browser you are using.
For Windows 10 and Windows 8.1
Remember passwords for websites
When you visit a website that requires you to sign in to your account—like an email, banking, or shopping site—Internet Explorer will ask if you want your user name and password remembered. The next time you visit the site and start entering your user name, Internet Explorer will finish filling in your account info.
Password saving is on by default in Internet Explorer, but here's how to turn on or off password saving:
In Internet Explorer, select the Tools button , and then select Internet options.
On the Content tab, under AutoComplete, select Settings.
Select the User names and passwords on forms check box, and then select OK.
To turn off password saving, clear the User names and passwords on forms check box.