Dear Aizaz I am sorry to say You present your query very difficult way. you mixing up the things. do not calculate the employee way but the calculate the things Job style. Job is the main head. job is the primary title and employees are secondary title. even two companies or three companies doesnt ...

The dependent will also be able to apply for ILR. Which one visa you got 50K or 200K?
you or ur dependant can apply ILR same time but for nationality you must spend 5 years (excluding specific period) in from that date of first arrivsl in uk.