There is the code for the guild MotD which seems to use
ZO_ScrollingSavingEditBox as a wrapper for this scrollable edit box / label combo. You can see the relevant code in
https://github.com/esoui/esoui/tree/...guild/keyboard
Check out
guildhome_keyboard.xml and
guildhome_keyboard.lua for an example on how to use it. Without more specific context to your code it can be hard to point out the exact problem for people that might want to help.