You can simply drag and drop your FBX file to aximmetry flow or using aximmtery File Browser

By default aximmtery import only geometry object to import lights/camera/materials you can do that using importer options

Also if you need to export FBX from other 3D software like 3D max and Cinema4D you need the following settings 

For 3D max

For Cinema4D

For animation you can use only DAE files  for more info 

https://my.aximmetry.com/forum/postdetails/160-imported-animation-from-other-3d-software