Do I have to use IMCE?
No. Acquia Cohesion allows the site builder to select, either use of IMCE or Entity browser for browsing and selecting images.
Acquia Cohesion renames to Site Studio from version 6.2. Tell me more.
No. Helpers are coupled with the page once placed. Changes to the Helper layout will not affect existing instances.
The style preview may not be updated because the refresh icon hasn't been toggled to the active state.
Running the composer update command will update any composer packages that have newer versions available.
Yes, this is possible by creating a custom element.
Custom styles are CSS styles for classes.