Hire staff as soon as possible to increase your earnings by a set amount per minute. Although it will not be much, it will eventually add up in scale. You will usually get one and two star staff from regular money grabs, but they are better than nothing. When you unlock better staff, swap out the worse ones. Do this by tapping the staff member to be replace and send them on a no pay leave, then bring in their replacement. Each staff member has a success percentage rate statistic. The higher their star ranking, the better their starting success percentage. You can increase their success rate by spending coins. Although this price will get very costly, it is worth improving high star staff to increase you chances at making more money. Consider ignoring staff with less than 40% chances and wait for my top staff to come with a deal.