At any time, you can access any pending esignatures logging into the account which created the entry.  

In the Xentry section, click on the Pending Esignatures link:

Click the Copy Esignature link and the system automatically copies the unique signature link so you can paste it into an email/chat/browser to send to the appropriate person to sign the form.  Each link is specific to each signature on each form.  

The link will be formatted look similar to the one below:

Since Xentry esign is based on identity management through USEA accounts, the person who logs in, after clicking the link, signs the form.  In the case of Trainer or Parent, the logged in user's information will replace the details listed on the entry form.