Sprout here, with 3 retainers, are 2 combat retainers a loss of money ?

[DPZ2]

Just to confirm, if I want a retainer to become dancer, I have to train her from Gladiator 1-30 > Paladin 30-60 > Dancer 60+ ?
I read I had to buy a special book to unlock GNB/DNC and similar jobs.

I don’t mind a bit of grind, I just got PLD to lvl 66 as my main GNB and I need to work on DNC too.

If you level Gladiator/Paladin to level 60, I'd say that you leave the Retainer as a Gladiator to that point, and then add the job of Dancer then. For more information, check out this Forum post from December of Last year. https://forum.square-enix.com/ffxiv/...the-dancer-job Jojoya's reply to the OP pretty much sums it up.

There is a book you'll need to purchase, Modern Vocation, from a retainer NPC for something like 40 Venture Coins. You can ask that NPC about assigning jobs. Do not just 'reset' your retainer's class.