Поставить в HEAD

<script async src='https://yastatic.net/pcode/adfox/header-bidding.js'></script>
<script>
    const adfoxBiddersMap = {
        'betweenDigital': '871789' ,
        'buzzoola': '880620' ,
    };
    var adUnits = [
        {
            code: 'adfox_157553235294826444',
            codeType: 'inpage',
            bids: [
                {
                    bidder: 'betweenDigital',
                    params: {
                        placementId: 3617570,
                    }
                },                {
                    bidder: 'buzzoola',
                    params: {
                        placementId: 774803,
                    }
                },
            ]
        },

    ];
    var userTimeout = 500;
    window.YaHeaderBiddingSettings = {
        biddersMap: adfoxBiddersMap,
        adUnits: adUnits,
        timeout: userTimeout
    };
</script>

-----------------------------------------------------------------------------------------------------
Поставить в BODY

InPage

<!-- CLICKIO AdFox unit 646797 -->
<div id='adfox_157553235294826444'></div>
<script>
    (function(w, n) {
w[n] = w[n] || [];
w[n].push({
        ownerId: 257193,
        containerId: 'adfox_157553235294826444',
        params: {
            pp: 'rua',
            ps: 'dmrc',
            p2: 'ggfb',
            slide: true,
            visibleAfterInit: true,
            insertAfter: 'undefined',
            insertPosition: '0',
            stick: true,
            stickTo: 'auto',
            stickyColorScheme: 'light'
        }});})(window, 'adfoxAsyncParams');
</script>