The Time Traveler background allows you to select three Lores to become trained in, but this option is missing from the selection page.
Thanks for letting us know! We’re still working through some of the feats, backgrounds, and options to get them where we want them, so this is likely one that we just haven’t gotten to yet. We’re at GenCon this weekend, but I’ll make a note for the team to check in on this when we get back on Monday. 