For client management:

https://otdo.crm6.dynamics.com/ 

For resources, document sharing and storage:

https://otdo.sharepoint.com/  

For Outlook email, calendar and more:

https://outlook.office365.com/  

For meetings, chat and training:

https://www.microsoft.com/en-au/microsoft-teams/log-in  

For referrals, training workshops and task planning:

Microsoft Planner App | Task Management Software for Teams

For document signing (contact admin for login details):

How Do DocuSign Electronic Signatures Work?