How to manually add startup applications on Mint 17.3

Question

I have fully updated Linux Mint 17.3.

I need to add a bunch of applications to startup.

The problem is, the following dialog doesn't work - It won't add me an application from the list, nor it will add any custom command.

Anyway, there must be other way I can add those applications manually, probably by editing some startup file?

Answer 1

I found it at:

~/.config/autostart/

Answer 2

I found that "autostart" can execute programs located specific place:

/usr/share/applications/

If you create link there, you can do that. Or you can use xinit start up script etc.