I've recently done a clean install of High Sierra and am struggling with reducing the annoyance of the app verification from gatekeeper. For security I log in as a standard user and have a separate admin account - this is the first time I've tried that separation between admin and standard accounts, which is where the problem may lie.
If I right-click the app and 'open', then confirm open again in the gatekeeper dialog, then I will still be asked every time I open the app.
I have disabled gatekeeper (security pane now has third radio button - allowing 'Anywhere' for download source) but this hasn't helped.
brew cask to download and install a number of apps and suspect it's those that I can't permanently approve.