colucci-web.it

Is it possible to add pre task - for example, for startup ec2 instanse and others

Hello,
there are no plans at this time.
However, the app implements the Tasker plugin interface that allows apps like Tasker and Automate to connect/disconnect VPNs and make decisions based on the current state of the VPNs.
With these apps, you can create custom tasks that perform actions both before and after connecting a VPN...

Could You provide manual for it, please

You can find the documentation for these apps here:
Automate
Tasker