function GroupLootHighscore:AddAllMembersInGroup()
    local countMembers = GetGroupSize()
 
    --get list of member names
    local members = {}
    for i = 1, countMembers do
        local unitTag = GetGroupUnitTagByIndex(i)
        if unitTag then
            local name = zo_strformat(SI_UNIT_NAME, GetUnitName(unitTag))
            members[name] = true
        end
    end
 
    --add all missing members
    for name in pairs(members) do
        if not self:MemberExists(name) then
            self:NewMember(name)
        end
    end
 
    --check memberCount, if it's not equal to countMembers, it must be more then that
    --(each call self:NewMember adds one to the counter). So we have to remove invalid
    --items from the master list
    if highscoreSettings.memberCount ~= countMembers then
        for name in pairs(highscoreSettings.members) do
            if members[name] == nil then
                highscoreSettings.members[name] = nil
                highscoreSettings.memberCount = highscoreSettings.memberCount - 1
                if highscoreSettings.memberCount == countMembers then --if memberCount is correct, we can end loop early
                    break
                end
            end
        end
    end
 
    self:UpdateHighscoreWindow()
    self:UpdateWindowSize()
end