After you receive an ID from your friend, you can add them to your contact book. This way, you can easily find them for future transfers and messaging. To add a contact to your account, first, you need to go to the "Personal Contacts" or "Company Contacts" section.

On the opening page, click the "+New Contact" button. You need to fill in the "ID" and "Name" sections. After that, the contact will be added to your contact list, and you can send text messages and transfers easily from now on.