You can access the working group Workspace on Slack by simply joining the corresponding working group(s) on GroupMan. Once the user registers to join the working group in GroupMan, the working group workspace and channels belonging to that group in Slack will become accessible.
For example, if a member would like access to Mesh Group Workspace in Slack, they would have to register to join that group in GroupMan first. Once they become a member of that working group in GroupMan, they will see a Mesh Working Group Workspace in their Slack Workspace Directory.
The Bluetooth SIG Slack organization can be accessed at: https://bluetoothsig.enterprise.slack.com/
SIG members log into Slack using single sign-on through Auth0. To log in, users will select the Sign in with Bluetooth SIG button and enter their Bluetooth SIG username and password.
Once logged on to Slack, members can browse through all of the working group Workspaces they have access to (example screenshot below).
From there, you can either choose to remain in the browser or launch in the Slack app.