These options are only available in the professional package or if you have activated the API module separately on your LeaveDays database.
In 2 steps you link other software packages to the leaveDays package.
For all Professional users of LeaveDays.com there is an API connection available from which other applications can be linked to your LeaveDays system. In other words, the linking technology is available. You just have to build the link yourself.
If you are ready to connect you need a client ID and client secret (see documentation). Contact the LeaveDays support department for this and they will provide you with this as soon as possible.