[merlight]

Originally Posted by Carter_DC first one, I can't get to have my tooltip on the BOTOMRIGHT... BOTOM works like a charm, but botomright displays the tooltip on the right... not botom... (that's not a really big issue)

This is due to how ZO_Tooltips_ShowTextTooltip translates the anchor point:

local SIDE_TO_TOOLTIP_SIDE =
{
    [TOP] = BOTTOM,
    [BOTTOM] = TOP,
    [left] = RIGHT,
    [right] = LEFT,
}
 
function ZO_Tooltips_ShowTextTooltip(control, side, ...)
    if side == nil then
        InitializeTooltip(InformationTooltip)
        ZO_Tooltips_SetupDynamicTooltipAnchors(InformationTooltip, control)
    else
        InitializeTooltip(InformationTooltip, control, SIDE_TO_TOOLTIP_SIDE[side], OFFSETS_X[side], OFFSETS_Y[side])
    end
 
    for i = 1, select("#", ...) do
        local line = select(i, ...)
        InformationTooltip:AddLine(line, "", ZO_TOOLTIP_DEFAULT_COLOR:UnpackRGB())
    end
end

You can do the calls yourself for better control:

InitializeTooltip(InformationTooltip, AT_Guild_ChatBtn, TOPLEFT, 0, 5, --[[ optional ]] BOTTOMRIGHT)
InformationTooltip:AddLine(AT_Guild.savedVariables.mainGuildName, "", ZO_TOOLTIP_DEFAULT_COLOR:UnpackRGB())