I used one master account and linked 4 other's to it.
I add all the toons to a guild and friend's list, party with them, etc, I see the option on the linked account to "Gift a level" however it's greyed out to gift a lvl 1 toon on the veteran account.
That's why i'm asking if there was some minimal level requirement to do so. I fully plan on waiting until 59/60 on most of them to lvl up additional alts, but i'm just curious as to why it's greyed out.