The duration will be in multiples of 30 days, starting with a minimum of 90 days for investment, while there is no duration for savings. Commencement date is the date that you credit Deepwell Consults account. Frequency means if you want to be saving daily, weekly, or on a regular basis. Payment date is the date that your account will be credited with your principal for investment. Payment instruction for the principal and interest means how you want your interest and principal to be paid back. Interest can be paid monthly while the principal is rolled over for the duration of the investment, or both principal and interest can be rolled over so that both are paid back on the due date.