All Allsite settings are stored in the project properties tab.
Changing a setting changes the default for features created in Civil 3D from then on; features already in a drawing keep the values they hold. See Project settings, feature values and the Settings Report for how the Settings Report shows those features and lets you apply the new defaults to them.
You can search for specific settings using the setting search box.
Alternatively you can filter settings based on a particular tool, below you can see an example where all Level AI settings are shown.
Configuring Tool Version
Allsite.ai is constantly improving, when new features and fixes are released they go to Alpha version first. Sometimes users will be asked to shift a project to Alpha tool version to gain access to a new feature they are requesting or resolution to an issue they raised. To do this, go to Project Properties -> Admin or search for "Design tool version" in the settings filter.