Transfer tenure and its calculation

Q.1. What is the fixed tenure in NE region region for NAVODAYA VIDYALAYA SAMITI's employee who completed 10 years service in his cadre/deptt.? Q.2. What What is the fixed tenure in NE region region for NAVODAYA VIDYALAYA SAMITI's employee who willingly opt posting in NE region from plain region and also completed 10 years service in his cadre/deptt.? Q.3. What What is the fixed tenure in NE region region for NAVODAYA VIDYALAYA SAMITI's employee who willingly opt posting in NE region from plain region, AND already completed mandatory tenure of three years in NE Region and also completed 10 years service in his cadre/deptt.? Q.4. Whether the continuous period of 06 months availed on extra ordinary leave due to medical grounds with prior intimation to superiors will be counted in tenure or excluded from tenure? Q.5. Whether the continuous period of 46 days availed on extra ordinary leave due to medical grounds with prior intimation to superiors will be counted in tenure or excluded from tenure? Q.6. Whether the period availed at home(work from home) on duty during lockdown wef 22.03.2020 till 30.07.2020 will be included in tenure or excluded from tenure? Q.7. Whether the period availed at home (work from home) on duty during w.e.f. 01.07.2020 till 14.10.2020 will be included in tenure or excluded from tenure?