function CzechQuestsAddon:InitializeOptions()
    CzechQuestsAddon.optionsFrame = {};
    CzechQuestsAddon.optionsFrame = Settings.RegisterVerticalLayoutCategory("CzechQuests")

    -- Add DEBUG checkbox
    local debugCheckbox = Settings.RegisterAddOnSetting(
            CzechQuestsAddon.optionsFrame,
            "CzechQuestsAddon__DEBUG_MODE",
            "DEBUG_MODE",
            CzechQuestsAddon_Store.config,
            type(CzechQuestsAddon_Store.config.DEBUG_MODE),
            "Enable DEBUG mode",
            CzechQuestsAddon_Store.config.DEBUG_MODE
    )
    Settings.CreateCheckbox(CzechQuestsAddon.optionsFrame, debugCheckbox)

    if (WOW_PROJECT_ID == WOW_PROJECT_CLASSIC) then
        -- Add DARK mode checkbox
        local darkModeCheckbox = Settings.RegisterAddOnSetting(
                CzechQuestsAddon.optionsFrame,
                "CzechQuestsAddon__DARK_MODE",
                "DARK_MODE",
                CzechQuestsAddon_Store.config,
                type(CzechQuestsAddon_Store.config.DARK_MODE),
                "Use dark mode",
                CzechQuestsAddon_Store.config.DARK_MODE
        )
        Settings.CreateCheckbox(CzechQuestsAddon.optionsFrame, darkModeCheckbox)
    end

    -- define FontOptions
    local function GetFontOptions()
        local container = Settings.CreateControlTextContainer()
        container:Add("morpheus_cz.ttf", "Morpheus (cz)")
        container:Add("frizquadratatt_cz.ttf", "Friz Quadrata TT (cz)")
        container:Add("quicksand.ttf", "Quicksand")
        container:Add("caveat.ttf", "Caveat")
        return container:GetData()
    end

    -- Add header font dropdown menu
    local headerFontFamilyDropdown = Settings.RegisterProxySetting(
            CzechQuestsAddon.optionsFrame,
            "CzechQuestsAddon__TRANSLATION_FRAME_HEADER_FONT_FAMILY",
            type(CzechQuestsAddon_Store.config.TRANSLATION_FRAME_HEADER_FONT_FAMILY),
            "Header font",
            CzechQuestsAddon_Store.config.TRANSLATION_FRAME_HEADER_FONT_FAMILY,
            function()
                return CzechQuestsAddon_Store.config.TRANSLATION_FRAME_HEADER_FONT_FAMILY
            end,
            function(value)
                CzechQuestsAddon_Store.config.TRANSLATION_FRAME_HEADER_FONT_FAMILY = value
                CzechQuestsAddon:UpdateTranslationFrameFontSettings()
            end
    )
    Settings.CreateDropdown(CzechQuestsAddon.optionsFrame, headerFontFamilyDropdown, GetFontOptions)

    -- Add text font dropdown menu
    local textFontFamilyDropdown = Settings.RegisterProxySetting(
            CzechQuestsAddon.optionsFrame,
            "CzechQuestsAddon__TRANSLATION_FRAME_TEXT_FONT_FAMILY",
            type(CzechQuestsAddon_Store.config.TRANSLATION_FRAME_TEXT_FONT_FAMILY),
            "Text font",
            CzechQuestsAddon_Store.config.TRANSLATION_FRAME_TEXT_FONT_FAMILY,
            function()
                return CzechQuestsAddon_Store.config.TRANSLATION_FRAME_TEXT_FONT_FAMILY
            end,
            function(value)
                CzechQuestsAddon_Store.config.TRANSLATION_FRAME_TEXT_FONT_FAMILY = value
                CzechQuestsAddon:UpdateTranslationFrameFontSettings()
            end
    )
    Settings.CreateDropdown(CzechQuestsAddon.optionsFrame, textFontFamilyDropdown, GetFontOptions)

    -- Add slider for change primary header font size
    local primaryHeaderFontSizeSlider = Settings.RegisterProxySetting(
            CzechQuestsAddon.optionsFrame,
            "CzechQuestsAddon__TRANSLATION_FRAME_PRIMARY_HEADER_FONT_SIZE",
            type(CzechQuestsAddon_Store.config.TRANSLATION_FRAME_PRIMARY_HEADER_FONT_SIZE),
            "Quest title size",
            CzechQuestsAddon_Store.config.TRANSLATION_FRAME_PRIMARY_HEADER_FONT_SIZE,
            function()
                return CzechQuestsAddon_Store.config.TRANSLATION_FRAME_PRIMARY_HEADER_FONT_SIZE
            end,
            function(value)
                CzechQuestsAddon_Store.config.TRANSLATION_FRAME_PRIMARY_HEADER_FONT_SIZE = value
                CzechQuestsAddon:UpdateTranslationFrameFontSettings()
            end
    )
    local primaryHeaderFontSizeSliderOptions = Settings.CreateSliderOptions(10, 30, 1)
    primaryHeaderFontSizeSliderOptions:SetLabelFormatter(MinimalSliderWithSteppersMixin.Label.Right);
    Settings.CreateSlider(CzechQuestsAddon.optionsFrame, primaryHeaderFontSizeSlider, primaryHeaderFontSizeSliderOptions)

    -- Add slider for change secondary header font size
    local secondaryHeaderFontSizeSlider = Settings.RegisterProxySetting(
            CzechQuestsAddon.optionsFrame,
            "CzechQuestsAddon__TRANSLATION_FRAME_SECONDARY_HEADER_FONT_SIZE",
            type(CzechQuestsAddon_Store.config.TRANSLATION_FRAME_SECONDARY_HEADER_FONT_SIZE),
            "Secondary title size",
            CzechQuestsAddon_Store.config.TRANSLATION_FRAME_SECONDARY_HEADER_FONT_SIZE,
            function()
                return CzechQuestsAddon_Store.config.TRANSLATION_FRAME_SECONDARY_HEADER_FONT_SIZE
            end,
            function(value)
                CzechQuestsAddon_Store.config.TRANSLATION_FRAME_SECONDARY_HEADER_FONT_SIZE = value
                CzechQuestsAddon:UpdateTranslationFrameFontSettings()
            end
    )
    local secondaryHeaderFontSizeSliderOptions = Settings.CreateSliderOptions(10, 30, 1)
    secondaryHeaderFontSizeSliderOptions:SetLabelFormatter(MinimalSliderWithSteppersMixin.Label.Right);
    Settings.CreateSlider(CzechQuestsAddon.optionsFrame, secondaryHeaderFontSizeSlider, secondaryHeaderFontSizeSliderOptions)


    -- Add slider for change secondary header font size
    local textFontSizeSlider = Settings.RegisterProxySetting(
            CzechQuestsAddon.optionsFrame,
            "CzechQuestsAddon__TRANSLATION_FRAME_TEXT_FONT_SIZE",
            type(CzechQuestsAddon_Store.config.TRANSLATION_FRAME_TEXT_FONT_SIZE),
            "Text size",
            CzechQuestsAddon_Store.config.TRANSLATION_FRAME_TEXT_FONT_SIZE,
            function()
                return CzechQuestsAddon_Store.config.TRANSLATION_FRAME_TEXT_FONT_SIZE
            end,
            function(value)
                local currentFont, _, currentFlags = {}
                currentFont, _, currentFlags = CzechQuestsAddon.translationFrame.primaryText:GetFont()
                CzechQuestsAddon.translationFrame.primaryText:SetFont(currentFont, value, currentFlags)
                currentFont, _, currentFlags = CzechQuestsAddon.translationFrame.secondaryText:GetFont()
                CzechQuestsAddon.translationFrame.secondaryText:SetFont(currentFont, value, currentFlags)
                CzechQuestsAddon_Store.config.TRANSLATION_FRAME_TEXT_FONT_SIZE = value
            end
    )
    local textFontSizeSliderOptions = Settings.CreateSliderOptions(10, 30, 1)
    textFontSizeSliderOptions:SetLabelFormatter(MinimalSliderWithSteppersMixin.Label.Right);
    Settings.CreateSlider(CzechQuestsAddon.optionsFrame, textFontSizeSlider, textFontSizeSliderOptions)

    -- Add slider for change secondary header font size
    local textureAlphaSlider = Settings.RegisterProxySetting(
            CzechQuestsAddon.optionsFrame,
            "CzechQuestsAddon__TRANSLATION_FRAME_TEXTURE_ALPHA",
            type(CzechQuestsAddon_Store.config.TRANSLATION_FRAME_TEXTURE_ALPHA),
            "Texture transparency",
            CzechQuestsAddon_Store.config.TRANSLATION_FRAME_TEXTURE_ALPHA,
            function()
                return CzechQuestsAddon_Store.config.TRANSLATION_FRAME_TEXTURE_ALPHA
            end,
            function(value)
                CzechQuestsAddon_Store.config.TRANSLATION_FRAME_TEXTURE_ALPHA = value
            end
    )
    local textureAlphaSliderOptions = Settings.CreateSliderOptions(10, 100, 10)
    textureAlphaSliderOptions:SetLabelFormatter(MinimalSliderWithSteppersMixin.Label.Right);
    Settings.CreateSlider(CzechQuestsAddon.optionsFrame, textureAlphaSlider, textureAlphaSliderOptions)

    -- Store it into Addon options
    Settings.RegisterAddOnCategory(CzechQuestsAddon.optionsFrame)
end