Not necessarily. I mean, yeah you could if you like and want to.
Here are some resources for the start:
https://www.esoui.com/forums/showthread.php?t=8413
Try to ask the auhor of the addon to add it. You can use the comments section or the feature request, "if it's enabled" at an addon.
At the addon description's page, right hand, in the box:
Portal -> FAQ
Bugs -> Report bugs
Features -> Ask for features
If this is missing the author did not enable it and you need to use the comment section at the addon, or a direct private message.