Besides the provided documentation regarding MDM (Modern Device Management) for Windows:
Modern Device Management (this is the overview and parent page)
Setting up MDM for Windows (this page has a link to our IMS Software Academy page that has how-to videos)
Obtaining and Importing the MDM Server Certificate for Windows
Setting Up and Configuring MDM Server for Windows
Do you have any specific steps in how to use and configure the available payloads for an MDM Profile? For example, like the one for "BitLocker Drive Encryption":
ITMS 8.7.x