How to install SDP as MySQL and not PGSQL

How to install SDP as MySQL and not PGSQL

The scenario is such that I cannot find the MySQL option in the setup. I need it because in a few weeks, we will be migrating all our existing data from a different helpdesk software (Numara Track-IT) into this. Therefor can someone explain me why I cannot find the MySQL option?  I have made a fresh installation of the Server OS and waiting for a response before I move further.

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