In order for users to sign a document electronically, you have to create a signature request for a shared document that they can approve and sign.
To create a signature request, go to the folder which contains the document that you would like to have signed. Select the document in the left side box, click More Actions and then Signature request.
Select the signers from the list of users. You may choose to notify the users by E-mail, SMS or Push message.
Once the users are selected, you may set the conditions of the signature request. The default due date is 30 days, and you may set an additional reminder for pending signatures. The default setting for this reminder is 3 days before the due date, but you may choose whatever date that suits you. The default level is set to Advanced electronic signature.
Note that a user with Limited electronic signature will not be able to sign the document with the default value unless the user changes his electronic signature settings (if possible), or else the value must be changed to Limited electronic signature. When the signature level is set to Limited electronic signature, all users will be able to sign the document (with Advanced electronic signature and Limited electronic signature).
The last page displays a summary of the signature request. Before clicking on Send request to finalize the process, you have the possibility to add a custom message in the email notification that is sent to the users requested to sign. This can be done by clicking Edit e-mail notification.