Usually, if the company you are purchasing the skylights from is professional and experienced, they may provide you with a team of specialists that are trained in installing the skylights with little to no issue. However, you have another alternative that consists of hiring other skylight installers that can perform the same task much better and quicker. If you wish so, you have to undertake a series of tests and checks to make sure that the installer is trustworthy and skilled enough to provide the services you are looking for. You can interview many of them and choose the right one. Ask for insurance, check for reputation and testimonials and make sure that he fully understands all your specifications and instructions. Additionally, if you purchase skylights from a particular company, make sure that it is experienced enough to be considered credible and trustworthy. They may have a quality staff that is willing to install the skylights for you with little to no effort and you do not have to look for someone else. Just consider these options and pick whatever you think it is most suitable. As an advice, the best thing would be to pick a great company right from the start and let it deal with the installation, repairs and maintenance processes of your skylights for a few years at least.