An assist with adding an additional role to a character

DigiAngel

So...I this tank see Pretty much the first one here....gear..skills..the works:

https://www.highgroundgaming.com/best-tank-builds-in-eso/

Works fine...provided I know the mechanics this build does well. However a lot of times, the public Craglorn crowd are looking for DPS....so that's my question. I'd like to add the additional role of DPS...not at the same time mind you, using the armory to switch back and forth. Just needing some advice on what the last painful way to do this....I know I'll most likely have to get additional skills and gear, but I did not find too many suggestions for an Imperial Dragonknight. Thank you!