Ask the developers to use Cloud Shell and run gcloud container clusters get-credential to switch to another cluster.

In a configuration file, define the clusters, users, and contexts. Share the file with the developers and ask them to use kubect1 contig to add cluster, user, and context details.

Ask the developers to install the gcloud CLI on their workstation and run gcloud container clusters get-credentials to switch to another cluster.

Ask the developers to open three terminals on their workstation and use kubect1 config to configure access to each cluster.