Appointment of director

Hi,

A Private limited company with only 2 directors having the following shareholding pattern

Director  A  - 85% of share

Director  B - 15% of share

1. Can Director A  appoint one more director with out the concert of the Director B?  

2. What are all the powers the Director A have due to the majority shares in the company?

Thanks in advance for your kind time to answer this question.

Best regards,

Sreevesh. R