How to setup weights priorities

What are they?

Every permissions plugins with groups have a weights system. Those weights are used to decided between all the player's groups, which one will be the primary group. It is used to define which of the player's group the plugin will take when checking the player.
In our case, for TAB to work properly, you have to define those weights so the primary group is taken correctly and make the sorting system or properties work like you desire.

How to set them up ?

LuckPerms

If you're using LuckPerms as permissions plugin, you have to use the command /lp group <groupName> setweight <number> The more important the group is, the higher the number must be. To verify your configuration, use /lp listgroups.

PermissionsEx

If you're using PEX as permissions plugin, you have to use the command /pex group <group> weight <number> In this case, compared to LuckPerms, the more important the group is, the lower the number must be.

Other plugins

If you aren't using LuckPerms or PermissionsEx, you'll have to dig in the plugin's wiki to find how to change them. And if your permissions plugin doesn't support it, then you can still assign groups by permissions within TAB.