All you have to do to use the Rank Utility Sign is to type [Rank] as shown in the image below on the first line of the sign. The first line can include color codes as these will not be noticed by SignUtils as it will only look for the visible text. The other lines of the sign can be left blank and in the event that they are, SignUtils will automatically auto-fill the default text shown below. If you use your own text on any of the following lines, then SignUtils will not auto-fill.
Notice: A requirement to create this sign is to have Vault enabled in the config.yml and installed on the server.
The Rank Utility Sign will let the player know what group(s) they are involved in by right clicking the sign and the /signutils rank or /signutils rank <player> command will perform the same action.
More Utility Signs will be added in the future, it is up to you to submit a feature request asking for a specific utility to be implemented!