If you want to create a signature for you email account in webmail with Roundcube we will guide you step by step so you can make it.
First you will have to access to the link of your web mail, typing in the URL the following address: (In the domain name you have to type your registered domain)
http://yourdomainname/roundcube/
In the next screen you will type your Mail account and password
Once you logged in go to Settings.
Select the tab called Identities.
In the window at the left you will see the name of your Mail account.
When you select it, it will display the screen you see on the right, there you will fill the form with your information.
After that, you have to select the section Signature
You will colocate your signature and will save the changes.
When you go to compose a new Mail, you will see a screen like the one below.
And that's it. You have finished editing your email Signature of your Mail account.