unmarried person

I meet them.

私は会います

I meet the unmarried members.

私は未婚者に会います

I meet the unmarried members at the hobby group.

私は趣味の集まりで未婚者に会います

I meet the unmarried members at the hobby group on Sunday.

私は日曜日に趣味の集まりで未婚者に会います

I meet the unmarried members at the hobby group with my older sister on Sunday.

私は姉と日曜日に趣味の集まりで未婚者に会います