The possibility to manage SSL certificates via the DirectAdmin control panel of your webhosting or reseller hosting account is turned off by default. With a few simple mouse clicks you can enable it and generate a CSR code from DirectAdmin, where you can install SSL certificates for your websites.
Login to your customer panel and click 'Your webhosting packages' or 'Your reseller hosting packages' on your left, and then click 'Overviews' after which you click the magnifying glass for which you wish to enable SSL management. From there you can enable SSL management.
Via DirectAdmin (reseller hosting accounts must first click on 'User level' in the right) you can generate a CSR code and install SSL certificates via the link 'SSL certificates' under 'Advanced features'.