The connection string defines exactly how DonorHub Lite will connect to your database. This is a Microsoft OLE DB or Microsoft ADO connection string. Remove the check next to "Use Template" to allow custom editing.
Uncheck the Use Template check box to allow custom editing.
Press the <Edit> button.
You might also choose to enter the connection string manually. For some assistance in putting together a connection string for your particular database, consider these helpful websites: