Local website needs to be seen by mutiple people

Hi , this is long and please answer quickly because this is my job . ok im a freelance web designer using word press to design a new website for an adult daycare . their marketing manager and others need to see the website but its local on my mac . i have it on a databse using mmap . is there a way to let them use the wordpress on their computers and edit the site as needed . i need to know because if there is a way to give them my wordpress files or let them log into wordpress on their computer even though the site is local it would help . the main problem is they have to approve the site before i can put it up on the server and i dont have a way to let them see the designs .