There is no "maybe" about moving his money away from EJ. They are horrible, awful and not even sure how what they do is even considered legal, but they are considered so, unfortunately.
They act like they are family friends. They make it a point to ingratiate themselves with their clients - how's your grand kid Billy doing with his soccer game? Oh nice! How was your vacation to Florida last month? Super! Hey, I'm your buddy, so I'm going to take goooood care of you...
They prey on the naive and elderly who may feel just a bit lonely. It is part of their company structure to make folks think they're just a friendly neighborhood adviser. But all of their funds are loaded or have insanely high expenses and management fees (or both). And I say this from personal experience - my MIL has all her accounts with them because she is so stupid she thinks the guy she's been "friends" with for the last 20 years is looking out for her best interests... holy hell, no he isn't - but you can't tell her that.
So if you have the ability - RUN AWAY FROM EJ ASAP.
Look into Vanguard for the accounts, and if you aren't interested in creating a
basic lazy portfolio out of their top recommendations (usually VTSAX and their total bond and then maybe some international index fund mixed in - see the link for ideas), then check out their
Wellesley which is a very conservative fund composed of roughly 40% stock/60% bonds, or
Wellington fund, which is a bit more into stocks (60%stock/40% bond) for your dad's money.
Both of these are a one and done fund. You can buy them, pay very low cost expense ratios (both are ~0.15% all inclusive and self-balancing meaning you don't have to babysit them yourself - they'll grow and rebalance as needed automatically) and they will preserve his money with either modest to medium growth depending on how conservative you wish to be.
You should be able to contact Vanguard, explain the situation (have dad's PoA, want to tranfer from EJ and sell off all the crap funds there and invest in X with Vanguard) and they can walk you through the process. From what I had to deal with transferring my own accounts, it's likely going to be: paperwork you fill out, create account(s) that equal what he currently has over at EJ - so like if he's got an IRA, a 401k and a taxable, then you'd need to create the same three types of accounts over at Vanguard for the EJ ones to go into. May need to sell off all the EJ funds while they still exist at EJ (you can transfer "in kind" also, but ask Vanguard which would be better). Then email/mail to Vanguard the filled out forms, and they should be able to handle the transfer and then you just go into the account and put in a buy order for each account. EJ likely will hit you with a sell fee, a transfer fee and even possibly a closed account fee (because they are bastard-coated bastards), but it will be a small price to pay to get the money out of their disgustingly grubby little hands.
Deposit most of the cash into a taxable might be the best, but you may want to have several years' worth of expenses available for him in either laddered CDs or a high yield savings account.