A Play List can be set to be launched when Remote Desktop Manager for Mac is opened.
To define a default Play List, click Edit - Play List - Play List Management. Then select your Play List in the Default at startup drop down.
Default at startup
If you check the Confirmation at startup box a confirmation window will be displayed before opening your Play List. You can then enable or disable sessions manually or you can cancel the process completely.
The last opened connections option will offer to reopen the sessions that were opened at the time you closed Remote Desktop Manager for Mac. That Play List is maintained automatically at every Remote Desktop Manager for Mac closing.