VArious plugins can be configured to do this...
I use that plugin on all my installs. 1 of them uses it to autosend to my personal profile, the rest go to various pages. I'm not sure I can pick and choose which to autopost though. I think you either configure it to auto post everything to your chosen destination, or manual post.... but I'm not 100%, I've always just had it configured to auto post
This one I"ve only dabbled with. I think it gives more options when posting to various services, but requires a bit more manual intervention. You can pick and choose where to send things, custom tailor the wording of the share, etc.
But both can be configured to send posts to personal profiles, or to pages. There are other plugins... these are just the 2 that I know work for me