"Far out in the cosmos, there exists a planet known as Voyager, where the mystery of travel into space and through time has been solved. It is inhabited by a race who call themselves Voyagers. Their purpose is to keep constant surveillance on history. These people have a time machine device, the Omni, which will take them into the past, present or future. As each Voyager graduates, he is given an omni and a guidebook. One such graduate, Phineas Bogg, was assigned as a field worker to operate in certain time zones."

At first, this quote didn't make sense since Phineas Bogg explains in the Pilot – "We're the people that are plucked out of time and trained to travel through the ages..." (See Mr. James Parriott's comment above - now we know why much of this script makes no sense!)

In "Old Hickory and the Pirate," Bogg reveals that he was once a pirate, not a native of Planet Voyager. From the Pilot, it's obvious by his outfit. Phineas is simply a field worker plucked out of time and trained for the work. On Planet Voyager, a ruling race of people has discovered the secrets of Time and space manipulation. These Voyagers appointed themselves or were appointed, as authorities over Earth's history. Fans of Doctor Who may be reminded of the Time Lords.

Planet Voyager's backstory is narrated in Voyager from the Unknown. We never actually see them. However, on the show, we meet a Tribunal of judges, Garth, Brindle, and Kane, who were Phineas' former Academy Professors.

The Voyager Council must decide whom to pick for their ranks after scouring the time-zones for candidates. People like Phineas Bogg go through a rigorous training and education process at the Academy to get brought up to speed with Earth's history. We could've gotten more world-building of Planet Voyager and its goals if Voyagers! had a longer run on television.

In Voyager From the Unknown Bogg tells Jeffrey:

"Where's Columbus, kid? Where am I? What'd I do wrong?"

"It was Control Computer's idea to come into Dayton!"

Those are new lines of dialogue. The downside was that Meeno hit puberty. So his voice-over dubs were too deep compared to his pre-pubescent voice. It was a shame they couldn't have produced 2 new adventures. Or one movie to tie up loose ends from the show. But Jon-Erik had already moved on to Cover Up and less than a month later had his tragic accident.

Because Voyagers! It lasted 1 season, and memorabilia tie-ins were hard to find. No Bogg and Jeffrey action figures, play-sets, and toy omnis, no coloring books or snazzy tin lunch boxes. There's only one tie-in book published by Scholastic Inc., yet it's the company that co-produced Voyagers! There should've been a book series on their end. The book didn't even have pictures, save for the cover. Usually those 70s & 80s novel Tie-ins had a middle section for photos. Scholastic produced one illustrated poster with history activities to promote Voyagers! in schools. According to James Parriott, between 1982 and '83, the Scholastic Weekly Readers Newsletters given out in schools made mention of Voyagers!, but those are hard to come by. 

Jon-Erik tried to save the show by making appearances and guest spots on the radio across the country. Meeno appeared at conventions, and James Parriott and his team did their very best to create interesting episodes. A lot of money was pumped into advertising "Cleo and the Babe," produced in honor of the World Series, but that game prompted Voyagers!, and the budget dropped.