Most WS1 -O365 integration documentation from Vmware is not easy to follow imo.
And the configuration is quite fragmented, with the UEM Console, WS1-Access (new name for Identity manager).
On the internet I found this tutorial, which made me create the whole shebang.... ...meaning O365 provisioning, SAML integration for Single Sign On for both Web Apps (Excel online, Word Online) AND native O365 Apps :
There are other sites like... just google for ' WorkspaceONE O365 integration SSO' :
VMware techzone: https://techzone.vmware.com/understanding-microsoft-office-365-integration
First step would be a solid integration between WS1 UEM and WS1 Access (IDM).
When that's done, arrange yourself an Azure/O36 developer account which allows for a 3 month free trial of O365 (like described in the hyperlinks above).
Then configure O365 and SAML integration with WS1 Access.