How to extract list of unique individuals from the master data set - Reg.

Hello good morning everyone,

Kindly help me in generate only unique list from the data set. The model data set have been attached for your reference. The data set is a dynamic data entry sheet, which has list of persons to visit counseling center and aims to cover daily visitors.

Requirement as below:

1. Need to find out only unique individuals from the data set. I have created a helper column, which shows result of number of visit by each individual. Based on that, i have done the count value also. . I have used this formula "=COUNTIFS($G$2:$G$28,1)" in "K2 column".

2. Now, i want to generate only those unique individual list between two dates in the table "I5:M5". I have tried the following formula in "I5" column.

=IFERROR(SMALL(IF(C2:C32=Helper,IF(B2:B32>=I2,IF(B2:B32<=J2,ROW(B2:B32)-1))),ROW(B1)),"")

Kindly help me.

Thanks in advance