This is another question that is answered with “it depends”, although there will almost certainly be an online portal to work with and several means to contact your provider if you would rather directly speak to a human. How easy that is depends on the PEO, and there may or may not be a dedicated contact, but there will always be a way to get your questions answered or to have appropriate adjustments made. You may also be able to make simple requests for changes online without contacting the PEO, or some things might require a more in-depth touch. Again, it all depends on who you work with.