Jumuah in a school

Q: I work in a school, o​n Fridays we do Jumma salaat with jam'at.  Some people have said that our Jumma is not correct because (a) the general public can't attend the salaat (even though any staff or pupils who wish to pray are able to attend). (b) There are not enough people (we usually get about 10 people besides the Imam). 

My question is that is our jumma salaat correct or is it better for us to pray zohar namaz with jamat instead. What is the minimum number of people we need (besides the Imam) for the jumma salaat to be correct?

Partners drawing a Salary

Q: If Zaid and Amar are partners in a business and they also work in the same business, Is it permissible for them to take a drawing or a salary monthly/weekly for the work that they are doing and at the end of the financial year end share the profits of the business?