Halacha 1 explicitly states that everyone can become impure due to tzara'at blemishes — even a newborn baby or servants — but NOT gentiles and resident aliens.
Question 2
An uneducated priest comes to examine a blemish. A sage is present who knows the laws. What must happen?
Halacha 2: The sage observes and instructs the priest ('Say: you are impure'), and the priest makes the verbal pronouncement. The ruling must come from the priest, as Deuteronomy 21:5 states 'their statements will determine every blemish.'
Question 3
At what time of day should blemish examinations ideally be conducted?
Halacha 6 states that examinations should be conducted in hours 4, 5, 8, and 9 after sunrise. Not in early morning (too dark), late afternoon (too dark), at noon (bright hue looks darker), or on cloudy days (dark looks bright).
Question 4
A person's 7th day of isolation falls on Shabbat. When is the examination conducted?
Halacha 7 states that if the 7th day falls on Shabbat or Yom Tov, the examination is postponed to after Shabbat (Sunday). This can create both leniencies and stringencies depending on what changes overnight.
Question 5
Two people with blemishes come before a priest at the same time. What must the priest do?
Halacha 10 states clearly that two blemishes must not be seen at the same time — whether on one person or on two people — as implied by 'the priest shall see THE blemish' (singular).