How to install the Securly SSL certificate on Mac OSX ?
Securly Support You will need to install the Securly SSL certificate on your device to ensure that Securly is able to filter all HTTPS sites browsed there effectively. Automated installation process You can automate the installation process via MDM by downloading the 'Securly Certificate Installer.pkg' file at the end of this article.
https://support.securly.com/hc/en-us/articles/206058318-How-to-install-the-Securly-SSL-certificate-on-Mac-OSX-