بسم الله الرحمن الرحيم
(1) Zakah amount should be given in such volume that the person who takes it does not turn owner of nisab. If someone does not turn owner of nisab if given 10 or 15 thousand rupees then you may give him this amount in zakah. It is makrooh to give someone zakah amount by which the person becomes owner of nisab.
(2) It is not lawful to give zakah to a Sayyid. You may support Sayyid people with nafl sadaqah and charity etc.
Allah knows Best!
Darul Uloom Deoband