Depending on whether you have integrated your eBay account with Skubana or not, there are two ways you can turn on the Out of Stock option for your eBay sales channel:
1. When adding eBay as a sales channel, check the eBay Out of Stock Control box on the eBay Integration page before clicking Launch eBay Authorization. This will activate the feature during the authorization process.
2. If you have already integrated your eBay account, on the toolbar, click Settings, click Sales Channels on the left sidebar, select your eBay sales channel, click Edit, select the connection tab, click Edit Integration, then check the eBay Out of Stock Control box to activate the feature.