The Member doctype allows you to record the Member details for a Membership.
Members are simply contacts in your ERPNext database with one or more memberships. The contact may be an individual, a household, an organisation, or some other contact sub-type, but it is always a contact to which a membership is applied.
To create new Member go to:
Non Profit > Member > New
Email: Email field is the id of Member doctype.
Membership Type: Membership Type is link field to Membership Type Doctype. Member can select Available Doctype.
Membership Expiry Date: This Field fetch membership end date details from membership doctype.
Address and Contact Section: This Section linked to address and contact doctypes.