Urge/allow user to edit the default schedule won instance creation

[Apollon77]

For Schedule adapters the defaukt schedule is automatically taken from io-package and is then only visible when expanding the instance configuration in Admin.

We should show a dialog after instance creation in Admin (e.g. before opening the adapter config?) that shows the default schedule and request the user to adjust it as required - but also tell the user to spread calls better? (No idea how to communicate that)